Perceptual Distortion Research Articles

Political Communication Strategy of The Candidate Pair Al Haris and Abdullah Sani in Winning The 2020 Jambi Gubernatorial Election

The purpose of this study was to determine the political communication strategy and the inhibiting factors and opportunities for political communication of the Al Haris and Abdullah Sani winning team. In an effort to obtain victory in the contestation of the Governor's Election in Jambi Province in 2020, which is pursued through careful political communication planning, the dissemination of issues regarding the candidate pair competing for the number one seat in the government is important to achieve victory. This research uses a qualitative descriptive method. Researchers use Political Marketing theory with three approaches, namely: push marketing, pull marketing, pass marketing. In this study the author took four informants as samples. Data collection in this study was collected from observations, interviews, and documentation. From the results of the study, there were several roles performed by the Al Haris and Abdullah Sani winning team during the campaign period, the campaign strategy was carried out in three ways: face-to-face campaigns, campaigns using social media, and open campaigns. The obstacles experienced by the winning team of Al Haris and Abdullah Sani in the field are semantic factors, namely the lack of solid coordination and communication between the winning team and perceptual distortion, namely errors caused by the narrow thinking of novice voters so that it is quite difficult to convey the programs and vision and mission of the candidate pair.

Acculturation Strategies of Indigenous Students in Learning English: A Qualitative Inquiry

This qualitative descriptive study aimed to identify the factors that contribute to social and psychological distance of indigenous English learners, their strategies to reduce these factors, and their insights about acculturation. To this end, ten indigenous English major students at the University of Mindanao were interviewed. Through thematic analysis, findings revealed that the factors involved in the social distance of the participants were incongruence and dissimilarity between 2LL and TL group, negative attitudinal orientation towards the TL group, and cohesiveness of the 2LL group, while the psychological factors were language shock, high affective filter, and ego permeability. To address these factors, the participants implemented the following strategies: positive intergroup relationship, accommodation of the TL, perceptual distortions in favor of outgroup vitality, cultivation of positive self-image, and development of TL skills. In terms of the insights of the participants, this study observed empowerment of indigenous community, enhancement of exposure to second language input, instructional scaffolding in L2 teaching, implementation of intercultural approach, immersion to the outgroup, and alleviation of affective filter. The results evinced how the acculturation dilemmas faced by indigenous English learners prevented effective second language acquisition. From this, appropriate solutions may be formulated to ensure successful acculturation in the classroom.

Deep learning-based biometric image feature extraction for securing medical images through data hiding and joint encryption–compression

Images are promising information carriers when compared to other media documents in the healthcare domain. However, digital data transmission over unprotected wired or wireless networks poses a threat to the security of healthcare systems. As a result, the issue of copyright violation and identity theft can occur due to the unauthorised use of these data. This paper proposes a new secure method under a framework that embeds biometric fingerprint image features in a medical image without any perceptual distortion. This paper uses ResNet152 for biometric image feature extraction in the first stage and features to generate a secret key for embedding in the second stage. The method combines encryption and compression scheme based on a generated key, novel chaotic map and Huffman coding to enhance the security of medical images while reducing the storage consumption or bandwidth requirements if images are transmitted to remote servers. Experimental results show that the proposed method presents superior security with high imperceptibility and compression performance, ensuring its effectiveness as an image protection mechanism for medical applications. Extensive experimental results show that the proposed method achieves an average peak signal-to-noise ratio (PSNR) that is above 54 dB, a structural similarity index measure (SSIM) close to 1, a bit error rate (BER) of 0 and a normalised correlation (NC) of 1. Moreover, this method compresses the images up to 70% when tested on three standard datasets.

Зрительные иллюзии и восприятие классической архитектуры

<p>We carried out psychophysical experiments to study perception mechanisms of images that are elements of building projections in ancient and classical architecture. The curvature of isolated lines and lines superimposed on a fan picture (Wundt-Hering illusion), as well as the orientation of lines in the presence of distractors with varying inclination and separation (tilt illusion) were estimated. We used the methods of constant stimuli and the forced choice procedure. The experiments were carried out on three subjects with a large number of presentations of stimuli, which made it possible to evaluate the statistical significance of the obtained dependences. The values of distortions in the illusion of Wundt-Hering (WH) and in the tilt illusion were determined. It is shown that the curvature of single lines without fan lines is estimated adequately. The analysis of the results led to the conclusion that corrections of the orientation and curvature of elements in classical architecture compensate for the distortions of visual perception. At the same time, the curvature of some elements may be due to the aesthetics of perception.</p>

Structural model proposal to explain online game addiction

In recent years, it has become easier for individuals to access technologies such as computers and cell phones. These technologies are used for work, entertainment or therapeutic purposes. Due to people who are not conscious about recreational use or parents who do not take preventive measures, many young people may turn to game addiction, either consciously or unconsciously, for reasons such as the pleasure they get from computer games, ambition, the desire to be the best, distancing from real life, curiosity, and not understanding how time passes. In this context, it becomes very important to determine the factors that cause young people's game addiction and to develop appropriate solutions to these factors. This study aims to understand the main determinants of online game playing habits and possible addiction among young people between the ages of 18–35 and to contribute to the development of preventive and awareness-raising measures by better understanding the gaming habits of young people. The proposed structural model analyzes the relationships between the variables affecting youth gaming addiction from a holistic perspective. This analysis aims to illuminate the potential effects of factors such as self-efficacy, curiosity, achievement goals, and flow experience on young people's gaming addiction. For this purpose, data were obtained through a survey method applied to 331 people with an average age of 23.5 who played online games between January and April 2022. Partial Least Squares Structural Equation Modeling (PLS-SEM) was used to test the structural relationships in the proposed research model and to examine the fit of the model. R 4.3.1 program was used for data analysis. As a result, the indirect total effects of self-efficacy, achievement, curiosity, and flow on game addiction were found to be positive and 0.263, 0.197, 0.169, and 0.267, respectively. It was found that the flow experience experienced by online gamers and the increase in the level of distortion in time perception had high effects on game addiction. In this context, it is suggested that preventing individuals' time perception from deteriorating or taking preventive measures in terms of flow experience will prevent game addiction, as well as preventing mental disorders that come with game addiction, and it is anticipated that it will be used as a source of literature for future studies.

Deep Learning-Based T2-Weighted MR Image Quality Assessment and Its Impact on Prostate Cancer Detection Rates.

Image quality evaluation of prostate MRI is important for successful implementation of MRI into localized prostate cancer diagnosis. To examine the impact of image quality on prostate cancer detection using an in-house previously developed artificial intelligence (AI) algorithm. Retrospective. 615 consecutive patients (median age 67 [interquartile range [IQR]: 61-71] years) with elevated serum PSA (median PSA 6.6 [IQR: 4.6-9.8] ng/mL) prior to prostate biopsy. 3.0T/T2-weighted turbo-spin-echo MRI, high b-value echo-planar diffusion-weighted imaging, and gradient recalled echo dynamic contrast-enhanced. Scans were prospectively evaluated during clinical readout using PI-RADSv2.1 by one genitourinary radiologist with 17 years of experience. For each patient, T2-weighted images (T2WIs) were classified as high-quality or low-quality based on evaluation of both general distortions (eg, motion, distortion, noise, and aliasing) and perceptual distortions (eg, obscured delineation of prostatic capsule, prostatic zones, and excess rectal gas) by a previously developed in-house AI algorithm. Patients with PI-RADS category 1 underwent 12-core ultrasound-guided systematic biopsy while those with PI-RADS category 2-5 underwent combined systematic and targeted biopsies. Patient-level cancer detection rates (CDRs) were calculated for clinically significant prostate cancer (csPCa, International Society of Urological Pathology Grade Group ≥2) by each biopsy method and compared between high- and low-quality images in each PI-RADS category. Fisher's exact test. Bootstrap 95% confidence intervals (CI). A P value <0.05 was considered statistically significant. 385 (63%) T2WIs were classified as high-quality and 230 (37%) as low-quality by AI. Targeted biopsy with high-quality T2WIs resulted in significantly higher clinically significant CDR than low-quality images for PI-RADS category 4 lesions (52% [95% CI: 43-61] vs. 32% [95% CI: 22-42]). For combined biopsy, there was no significant difference in patient-level CDRs for PI-RADS 4 between high- and low-quality T2WIs (56% [95% CI: 47-64] vs. 44% [95% CI: 34-55]; P = 0.09). Higher quality T2WIs were associated with better targeted biopsy clinically significant cancer detection performance for PI-RADS 4 lesions. Combined biopsy might be needed when T2WI is lower quality. 2 TECHNICAL EFFICACY: Stage 1.

Vestibular disorders in blast injuries. The role of growth hormone

The data about vestibular disorders resulting from blast injury are contradictory. To disclose the problem of vestibular disorder as a consequence of a blast injury, we have done present investigation. One hundred and ten patients were examined: 65 Anti-Terrorist Operation (ATO) participants with mild traumatic brain injury (mTBI), 44 non-ATO plus one patient with acromegaly was examined using posturography. Questionnaire “Types of Dizziness” has been used according to the International Clinical Protocol on Vestibular Disorders (Dizziness). Complaints of dizziness (distortion of perception of space, movement and time) have been revealed in 70.77 % (46) ATO and 43.18 % (19) non-ATO patients: F-test = 0.51, T-test = 0.004, showing that this complaint is not specific to mTBI. Objective vertigo (sensation of the subjects moving around the patient) was detected in 26.15 % (17) ATO and 11.56 % (5) non-ATO patients: F-test = 0.027, T-test = 0.046. Thus, we have two different qualitative groups. So, these complaints are specific to the patients, who survived blast injury. Complaints of subjective vertigo are also typical for those with blast injury. Complaints of pseudovertigo are specific to the patients, who survived blast injury. Imbalance and drop attacks are not typical for ATO patients. Complaints of kinetosis are specific to the people with blast injury. Orthostatics (discomfort sensations that appear after sudden standing up) have been revealed in 76.92 % (50) ATO and 47.73 % (21) non-ATO patients, this complaint is not typical for mTBI. Vestibular system organizes space orientation tetrad: vestibular, somatosensory, visual and hearing information to percept, orient and interact with environment. Acro-, nycto- and ascendophobia have appeared to be of no importance. Agoraphobia (Greek αγωρα — market, supermarket syndrome, discomfort in open, public places or crowds) has been revealed in 33.85 % (22) ATO and 15.91 % (7) non-ATO patients; this complaint is not specific to mTBI. Claustrophobia (discomfort appearing in small, closed spaces) is detected in 20 % (13) ATO and 9.09 % (4) non-ATO patients: F-test = 0.024, T-test = 0.10. Thus, we have two different qualitative groups. It is also an interesting case, when we reveal qualitative difference without quantitative one. This is the argument to use F-test in our study. So, complaints of claustrophobia are specific to the patients, who survived blast injury. The same situation is with descendophobia (discomfort during walking down the hill or descending the staircase, patients note the necessity of visual control). The results are discussed from the point of view of a severe vestibular disorder due to the blast injury. The tallness correlated with drop attacks (R29.6 according to ICD-10, the nosology is missing in the Ukrainian translation), it is suggested that growth hormone might cause the fluctuation of vestibular function. Conclusions. 1. ATO participants have pronounced vestibular disorders. 2. Patients with mTBI (ATO participants) experienced severe stress. 3. Signs of vestibular dysfunction such as complaints of objective and subjective vertigo, kinetosis differed quantitatively and qualitatively, therefore, being specific to the ATO participants. 4. Pseudovertigo, claustrophobia, descendophobia differed only qualitatively. 5. Dizziness, loss of consciousness, orthostatics, agoraphobia differed only quantitatively. 6. The tallness of patients with mTBI correlated with complaints of drop attacks, both quantitatively and qualitatively. 7. In statistical studies, it is important to use Fisher’s matrix test.

Hearing perception by cochlear implantation

Cochlear implantation is a unique development in the field of prosthetics of human sensory systems. Due to the electrical stimulation of the auditory nerve, auditory sensations close to natural occur. Despite significant progress in the engineering design of cochlear implants (CI), the quality of auditory perception when used is significantly limited. CI users experience the greatest difficulties in communication tasks such as understanding speech in noise or in multi-talkers environment. There are many factors, both technical and physiological, to reduce speech intelligibility in CI users. Speech perception in CI users is limited due to low frequency resolution, perceptual distortion of pitch, and compression of dynamic range. Low frequency resolution is the reason a decrease in speech intelligibility and the ability to perceive music. To realize these ability the question about the state of central hearing mechanisms, especially for children with congenital deafness, is crucial Neuroplasticity with ages decreases and the central auditory processing deficiency develops, therefore, it is desirable to carry out cochlear implantation as early as possible after hearing loss identification. Analysis of the auditory perception features in case of the auditory nerve is electrically excited allows not only to propose innovative approaches to improve the auditory abilities of CI users, but also to study auditory processing disorders.

Serial Dependence in Perception.

Much evidence has shown that perception is biased towards previously presented similar stimuli, an effect recently termed serial dependence. Serial dependence affects nearly every aspect of perception, often causing gross perceptual distortions, especially for weak and ambiguous stimuli. Despite unwanted side-effects, empirical evidence and Bayesian modeling show that serial dependence acts to improve efficiency and is generally beneficial to the system. Consistent with models of predictive coding, the Bayesian priors of serial dependence are generated at high levels of cortical analysis, incorporating much perceptual experience, but feed back to lower sensory areas. These feedback loops may drive oscillations in the alpha range, linked strongly with serial dependence. The discovery of top-down predictive perceptual processes is not new, but the new, more quantitative approach characterizing serial dependence promises to lead to a deeper understanding of predictive perceptual processes and their underlying neural mechanisms.

When feeling is for seeing: comparing the effects of motivated perception between fear and anger on ambiguous threatening stimuli.

We do not see the world as it is: distortions of visual perception can occur depending on the goals we wish to achieve ("wishful seeing"). Following functionalist theories of emotions (e.g., "feeling is for doing"), visual perception biases could also be involved in the link between emotion and specific behavior. Previous research has shown that anger can modify visual perception towards ambiguous menacing stimuli, or that fear can similarly direct our attention and perception towards threatening stimuli (e.g., weapons). The aim of our research was to replicate these effects by directly comparing the effects of these two emotions on perceptual biases and by relying on general mixed models to control Type I errors and reduce the risk related to the non-independence between observations. Our results partially replicate a perceptual bias toward threatening objects for both emotions although this effect depends on the type of stimulus and of the emotional dimension involved. These results are discussed in terms of the impact of emotions in attentional and perceptual processes and in relation to alternative theoretical explanations for motivated perception.

Mild blast injury: vertigo complaints analysis

The data about vestibular disorders resulting from blast injury are contradictory. To disclose the problem of vestibular disorder as the consequence of blast injury, we have done present investigation. One hundred and nine patients were examined: 65 Anti-Terroristic Operation (ATO) participants, who survived mild and moderate blast injury without cranial trauma, and 44 non-ATO patients (rhinitis, pharyngitis, otitis). Questionnaire “Types of dizziness” has been used according to the International Clinical Protocol on Vestibular Disorders (Dizziness). Complaints of dizziness (distortion of perception of space, movement and time) have been revealed in 70.77 % (46) ATO and 43.18 % (19) non-ATO patients: F-test = 0.51, T-test = 0.004, thus, showing that this complaint is not specific for mild traumatic brain injury (mTBI). Objective vertigo (sensation of subjects moving around the patient) met in 26.15 % (17) ATO and 11.56 % (5) non-ATO patients: F-test = 0.027, T-test = 0.046. So, we have two different qualitative groups. Тhese complaints are specific for the patients, who survived blast injury. Complaints of vertigo are also typical for the patients, who survived blast injury. Complaints of giddiness are specific for the patients, who survived blast injury. Imbalance and drop attacks are not typical for ATO patients. Complaints of kinetosis are specific for the patients, who survived blast injury. Orthostatics (discomfort sensations that appear after sudden standing up) has been revealed in 76.92 % (50) ATO and 47.73 % (21) non-ATO patients, this complaint is not specific for mTBI. Vestibular system organizes space orientation tetrad: vestibular, somatosensory, visual and hearing information to percept, orient and interact with environment. Acro-, nycto- and ascendophobia have appeared to be of no importance. Agoraphobia (Greek αγωρα — market, supermarket syndrome, discomfort in open, public places or crowds) has been detected in 33.85 % (22) ATO and 15.91 % (7) non-ATO patients. This complaint is not specific for mTBI. Claustrophobia (discomfort appearing in small, closed spaces) is met in 20.00 % (13) ATO and 9.09 % (4) non-ATO patients: F-test = 0.024, T-test = 0.10. Thus, we have two different qualitative groups. This is also interesting case, when we reveal qualitative difference without quantitative one. This is the argument to use F-test in our study. So, complaints of claustrophobia are specific for the patients, who survived blast injury. The same situation is with descendophobia (discomfort during walking down the hill or descending the staircase, patients note the necessity of visual control. It has been shown that among other signs, there is a positive correlation with age, imbalance, ascendophobia and dyspnea). The results are discussed from the point of view of the severe vestibular impairment due to the blast injury. Conclusions. 1. MBTI from blast injury is accompanied by severe stress, objective and subjective vertigo, giddiness and kinetosis, which are considered to be the symptoms of vestibular damage. 2. Dizziness, orthostatics and agoraphobia are quantitatively significantly increased in mBTI, but it might not be considered specific for blast injury consequences. 3. Giddiness, claustrophobia and descendophobia in ATO patients have no quantitative changes compared to the ENT patients, but are specific for mBTI after blast injury. 4. It is important to use matrix Fisher test in statistical examinations.

Poster Session: Visual System Assessment for Predicting a Transition to Psychosis.

Visual system assessments are seldom regarded as a viable way to predict a future psychotic disorder. Here, we argue that may be a missed opportunity. From a large literature, we identify a set of visual tests that have distinguished individuals prior to or near the first psychotic episode or that have shown group differences independently of illness duration. Such tests have revealed moderate-to-large patient differences unexplainable by medication or generalized deficits. For example, self-reported visual perceptual distortions have already longitudinally predicted impending psychosis in large samples. Possibly predictive psychophysical tests include contrast sensitivity, backward masking, collinear facilitation, stereoscopic depth perception, contour integration, visual shape completion, and restricted fixational patterns during free viewing. Possible brain based markers include visual thalamo-cortical hyperconnectivity, decreased gamma band power during visual detection, and reduced occipital P1 amplitudes (EEG) during passive viewing. Promising retinal markers include reduced cone a- and b-wave amplitudes and photopic negative response (ERG). The foregoing assessments are often brief, well-tolerated, simple to administer, and well-described mechanistically. Across all major levels of analysis-from phenomenology to behavior to brain and retinal functioning-visual system assessment could help identify individuals who go on to develop a psychotic disorder.

Penerapan Terapi Generalis Halusinasi Untuk Menurunkan Tingkat Halusinasi Pada Pasien Skizofrenia Di RSJD Dr.RM. Soedjarwadi Klaten

Background: Hallucinations are false perceptual distortions that occur in maladaptive neurobiological responses, sufferers actually experience sensory distortions as real things and respond to them (Pardede, 2020). Generalist therapy is the application of standard scheduled nursing care that is applied to patients with the aim of reducing the mental nursing problems being handled. (Livana et al., 2020).Objective: To find out the results of implementing Generalist Therapy to Reduce the Level of Hallucinations in Schizophrenic Patients at RSJD Dr.RM Soedjarwadi Klaten.Method: The method used was a case study research design, the sample used was 2 respondents, the research instrument used was the AHRS observation sheet which was carried out before and after Hallucination Generalist Therapy was carried out. Findings: Before Generalist Hallucination Therapy Mr. A was in the category of severe hallucinations while Mr. P was in the category of moderate hallucinations. After Generalist Hallucination Therapy Mr. A was in the category of seeding hallucinations while Mr. P was in the mild category. Implication: There was a decrease in the level of hallucinations after the Hallucination Generalist Therapy was carried out on Mr. A and Mr.P which was carried out for 3 meetings.

Psychophysiological stress influences temporal accuracy.

Distortions of duration perception are often observed in response to highly arousing stimuli, but the exact mechanisms that evoke these variations are still under debate. Here, we investigate the effect of induced physiological arousal on time perception. Thirty-eight university students (22.89 ± 2.5; 28 females) were tested with spontaneous finger-tapping tasks and a time bisection task (with stimuli between 300 and 900ms). Before the time bisection task, half of the participants (STRESS group) performed a stress-inducing task, i.e., the Paced Auditory Serial Addition Test (PASAT), whereas the other participants (CONTROL group) performed a control task, the Paced Auditory Number Reading Task (PANRAT). The PASAT induced a greater heart rate, but not electrodermal, increase, as well as a more unpleasant and arousing state compared to the PANRAT. Moreover, although the two groups presented a similar performance at the finger-tapping tasks, participants in the STRESS group showed better temporal performance at the time bisection task (i.e., lower constant error) than the controls. These results indicate that psychophysiological stress may alter the subsequent perception of time.

Time perception during the pandemic: A longitudinal study examining the role of indoor and outdoor nature exposure for remote workers

Time perception is an important psychological concept and many studies have established a link between time perception and wellbeing outcomes. Prior research and accounts of human experiences have shown that the onset of COVID-19 and related lockdowns led to distortions in time perception especially in the early months. This exploratory study was conducted longitudinally across three survey time points during the COVID-19 pandemic, Dec 2020 (N = 452), March 2021 (N = 302), and March 2022 (N = 228), focusing on remote workers in the US. This is one of the first studies looking to surface relationships between shifts in time perception in relation to shifts in nature exposure (both indoor and outdoor) during the pandemic. In this study we focus on four measures of time perception: overall perceived speed of time passage, day-to-day perceived speed of time passage, blurring of boundaries between time markers, and time perspectives. As hypothesized, our results show that during the pandemic, as time passed, people experienced a shift towards faster perceived speed of time passage, both overall and day-to-day, as well as a decrease in blurring of boundaries. We also found indoor nature exposure to be significantly associated with faster overall and day-to-day perceived speed of time passage, while outdoor exposure was marginally significantly associated with faster day-to-day perceived speed of time passage. This study is an initial step to understand how nature exposure might be a valuable way of mitigating temporal distortions, even in circumstances as adverse as a global pandemic.

Distortions in time perception during collective trauma: Insights from a national longitudinal study during the COVID-19 pandemic.

During the protracted collective trauma of the COVID-19 pandemic, lay of distorted perceptions of time (e.g., time slowing, days blurring together, uncertainty about the future) have been widespread. Known as "temporal disintegration" in psychiatric literature, these distortions are associated with negative mental health consequences. However, the prevalence and predictors of temporal disintegration are poorly understood. We examined perceptions of time passing and their associations with lifetime stress and trauma and pandemic-related secondary stress as COVID-19 spread across the United States. A probability-based national sample (N = 5,661) from the NORC AmeriSpeak online panel, which had completed a mental and physical health survey prior to the pandemic, completed two surveys online during March 18-April 18, 2020, and September 26-October 16, 2020. Distorted time perceptions and other pandemic-related experiences were assessed. Present focus, blurring weekdays and weekdays together, and uncertainty about the future were common experiences reported by over 65% of the sample 6 months into the pandemic. Half of the sample reported time speeding up or slowing down. Predictors of temporal disintegration include prepandemic mental health diagnoses, daily pandemic-related media exposure and secondary stress (e.g., school closures, lockdown), financial stress, and lifetime stress and trauma exposure. During the first 6 months of the COVID-19 pandemic, distortions in time perception were very common and associated with prepandemic mental health, lifetime stress and trauma exposure, and pandemic-related media exposure and stressors. Given that temporal disintegration is a risk factor for mental health challenges, these findings have potential implications for public mental health. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Adaptation of the Game Transfer Phenomena Scale into Spanish: Sensory-Perceptual Changes, Intrusive Thoughts, and Involuntary Behaviors in Mexican Video Game Players

Introduction: research on game transfer phenomena (GTP) is focused on understanding the impact of video game features and experiences on sensory perception, thoughts, and behaviors rather than on excessive/uncontrollable playing regardless of negative consequences. However, studies have shown a relationship between GTP and gaming disorder, and there is a resemblance between some forms of GTP and the perceptual disturbances that result as side effects of hallucinogens. Video game players have reported experiencing sensory perception changes (e.g., perceptual distortions of objects or environments and visual, auditory, or tactile hallucinations from games), intrusive thoughts, involuntary actions, and behaviors (e.g., the movement of fingers when interacting with game elements or a keyboard) . Objective: first, to adapt and validate the Game Transfer Phenomena Scale (GTPS) in Spanish with a Mexican sample. Second, to examine the adequacy of the frequency rating scale used in the GTPS. Method: cross-sectional survey with 607 players; most were males between 18 and 27 years old. Results: the higher-order factor model showed acceptable results. The prevalence of GTP was 96%. The number of game genres played and session length was correlated with all GTPS subscales, confirming the criterion validity. The examination of the frequency rating scale via the item response theory showed that selecting the second level of the scale “once” should be treated with caution. Discussion and conclusions: confirmatory factor analysis showed that the GTPS adapted into Spanish and tested in the Mexican sample was valid and reliable. Experiencing GTP more than once may be more meaningful for establishing the prevalence of GTP.

Impacts of Development, Dentofacial Disharmony, and Its Surgical Correction on Speech: A Narrative Review for Dental Professionals.

Speech is a communication method found only in humans that relies on precisely articulated sounds to encode and express thoughts. Anatomical differences in the maxilla, mandible, tooth position, and vocal tract affect tongue placement and broadly influence the patterns of airflow and resonance during speech production. Alterations in these structures can create perceptual distortions in speech known as speech sound disorders (SSDs). As craniofacial development occurs, the vocal tract, jaws, and teeth change in parallel with stages of speech development, from babbling to adult phonation. Alterations from a normal Class 1 dental and skeletal relationship can impact speech. Dentofacial disharmony (DFD) patients have jaw disproportions, with a high prevalence of SSDs, where the severity of malocclusion correlates with the degree of speech distortion. DFD patients often seek orthodontic and orthognathic surgical treatment, but there is limited familiarity among dental providers on the impacts of malocclusion and its correction on speech. We sought to review the interplay between craniofacial and speech development and the impacts of orthodontic and surgical treatment on speech. Shared knowledge can facilitate collaborations between dental specialists and speech pathologists for the proper diagnosis, referral, and treatment of DFD patients with speech pathologies.

Feature-based attention warps the perception of visual features

Selective attention improves sensory processing of relevant information but can also impact the quality of perception. For example, attention increases visual discrimination performance and at the same time boosts apparent stimulus contrast of attended relative to unattended stimuli. Can attention also lead to perceptual distortions of visual representations? Optimal tuning accounts of attention suggest that processing is biased towards “off-tuned” features to maximize the signal-to-noise ratio in favor of the target, especially when targets and distractors are confusable. Here, we tested whether such tuning gives rise to phenomenological changes of visual features. We instructed participants to select a color among other colors in a visual search display and subsequently asked them to judge the appearance of the target color in a 2-alternative forced choice task. Participants consistently judged the target color to appear more dissimilar from the distractor color in feature space. Critically, the magnitude of these perceptual biases varied systematically with the similarity between target and distractor colors during search, indicating that attentional tuning quickly adapts to current task demands. In control experiments we rule out possible non-attentional explanations such as color contrast or memory effects. Overall, our results demonstrate that selective attention warps the representational geometry of color space, resulting in profound perceptual changes across large swaths of feature space. Broadly, these results indicate that efficient attentional selection can come at a perceptual cost by distorting our sensory experience.

Robust Watermarking Techniques for the Authentication and Copyright Protection of Digital Images: A Survey

Digital image authentication and security are crucial concerns for the digital revolution since any image may be readily tampered with. Digital watermarking schemes were since been utilized to tackle a range of problems over time and involving the verification of digital images and copyright protection. In a real-world setting, watermarked contents are frequently subject to a succession of assaults which makes it necessary to strike a balance between resilience and imperceptibility in the face of attacks. There are numerous hazards to this, and numerous watermarking techniques have been created to counter them. Data with less perceptual distortion should be able to be included in a real watermarking technique in addition to restoring the original cover content. As a result, robustness, imperceptibility, and security are three crucial criteria for digital content'sauthentication and copyrightpreservation. This study therefore presents a careful review of some cutting-edge watermarking technologies used for copyright protection and authentication so as to identify their strengths and limitations. For clarity, this study shall explain some basic concepts of digital watermarking as well as the various forms of attacks on watermarks. The contributions from this work will be useful to researchers aim at developing efficient watermarking techniques