Eye-hand Movements Research Articles

Inspiring Through Interaction: The Impact of Teachers' Verbal and Non-Verbal Communication in EFL Classes

Effective verbal communication, including clear explanations and constructive feedback, ensures that students comprehend the material and feel supported. Nonverbal communication, such as gestures, facial expressions, and eye contact, significantly contributes to sustaining student engagement and motivation. This research examines teachers' various verbal and nonverbal communication techniques in English as a Foreign Language (EFL) classes and explores their impact on student motivation. The study involved two teachers and 57 students from senior high schools in Indonesia, employing a phenomenological qualitative approach. Data collection methods included observation checklists, interviews, and questionnaires. The analysis revealed that teachers utilized seven distinct verbal communication methods—lecturing, questioning, giving directions, providing praise and encouragement, and offering feedback—and seven nonverbal methods, including eye contact, hand movements, physical proximity, facial expressions, physical appearance, and chronemics (the strategic use of time). Among these, students rated suggestions, praise, and encouragement as the most motivating verbal interactions, while eye contact emerged as the most influential nonverbal factor. These findings underscore the need for targeted teacher training in these communication strategies to foster a more engaging and motivating learning environment, thereby enhancing student learning outcomes in Indonesian EFL contexts.

Visualizing simultaneous eye-hand movements in a MATLAB dashboard

Eye-hand coordination (EHC) is crucial to our daily activities, and its underlying mechanisms are being intensely studied. The analysis of simultaneous eye and hand movements can provide valuable insights into EHC, particularly for individuals struggling with dexterous control, such as might be caused by stroke or traumatic brain injuries. Despite advancements in motion-capture and eye tracking technologies, there is currently no automated method for visualizing concurrent eye- and hand-movement data. To address this need, we have developed a MATLAB-based dashboard designed for near instantaneous analysis and visualization of eye and hand-tracking data. This paper introduces the design of the dashboard and presents experimental results obtained from its application, leveraging simulated data inspired by our recent work in stroke. This testing suggests that our solution has the potential to significantly aid in understanding and investigating EHC by providing side-by-side and time-locked comparison of eye/hand movements along with their timing and spatio-temporal errors, offering novel opportunities for research and clinical applications.•Continuous eye movement data is collected throughout the experiment•Continuous hand movement data is collected throughout the experiment•Combine datasets and display time-locked eye-hand data in a single dashboard

Lexicons in Ajisaka Dance

Ajisaka dance is a traditional Balinese dance that has lexicons and their cultural meaning. The ones who practice and perform the dance do not know about the lexicons of the dance. It can cause language death because the native speaker does not maintain their language. This study aimed to find out the lexicons and their cultural meaning related to Ajisaka dance movements. The setting of this study was conducted in Buleleng regency. It was designed in the form of a qualitative method using an ecolinguistic approach. The data were obtained through observation and interview techniques. The results of the study show that the lexicons are classified into eye movements (two lexicons), neck movements (two lexicons), body movements (four lexicons), hand movements (eight lexicons), finger movements (four lexicons), and leg movements (eight lexicons) and the cultural meaning of the lexicons of movements refers to the firmness, obedience to responsibility, authority, majesty, intelligence and agility, the subtlety of mind and soul, and the strong principles of the king and his soldiers. The results of this study can be used as teaching material for the dance teacher to teach lexicons and their cultural meaning to their students and introduce it to foreigners who want to learn this dance. Specifically, this study can help maintain a local language and lead to avoiding language death. Keywords: ecolinguistic; lexicons; cultural meaning; Balinese dance; Ajisaka dance

A multi-source behavioral and physiological recording system for cognitive assessment

Cognitive assessment has a broad application prospect, including estimate of childhood neuro development and maturation, diagnosis of neurodegenerative diseases, and selection for special profession. With the development of computer technique and behavioral recording sensors, the method of cognitive assessment has been replaced from paper scale test to human–computer interaction. We can not only obtain the results of tasks, but also make it possible to acquire multiple behavioral and physiological data during the task. However, there is still a strong challenge of recording multi-source data synchronously during multi-dimensional cognitive assessments. Therefore, we built a multi-source cognitive assessment system can record multi-pattern behavioral and physiological data and feedback at different spatiotemporal levels. Under this system, we developed a multi-source diagnostic toolset for cognitive assessment, including eye tracking, hand movement, EEG and human–computer interaction data during the cognitive task. 238 participants with different mental disorders were assessed using this system. The results showed that our diagnostic toolset can be used to study the behavioral abnormalities of patients with mental disorders through the characteristics of multi-source data. Furthermore, this system can provide some objective diagnostic criteria such as behavioral characters and EEG features for diagnosis of mental disorders.

Putative cell-type-specific multiregional mode in posterior parietal cortex during coordinated visual behavior

In the reach and saccade regions of the posterior parietal cortex (PPC), multiregional communication depends on the timing of neuronal activity with respect to beta-frequency (10-30Hz) local field potential (LFP) activity, termed dual coherence. Neural coherence is believed to reflect neural excitability, whereby spiking tends to occur at a particular phase of LFP activity, but the mechanisms of multiregional dual coherence remain unknown. Here, we investigate dual coherence in the PPC of non-human primates performing eye-hand movements. We computationally model dual coherence in terms of multiregional neural excitability and show that one latent component, a multiregional mode, reflects shared excitability across distributed PPC populations. Analyzing the power in the multiregional mode with respect to different putative cell types reveals significant modulations with the spiking of putative pyramidal neurons and not inhibitory interneurons. These results suggest a specific role for pyramidal neurons in dual coherence supporting multiregional communication in PPC.

AN ANALYSIS OF CULTURAL MEANING RELATED TO LEXICONS IN SATYENG BERATI DANCE

AbstractSatyeng Berati dance is a traditional dance from Bali with many lexicons to identify and document. But over time, several lexicons are rarely used when doing dance practice. It has the possibility of language extinction because the number of speakers of that language has decreased. The purpose of this study is to document the lexicons in the Satyeng Berati dance, especially the cultural meanings of the lexicons in movement. This study is designed in the form of descriptive qualitative research. Data collection is done through observation and interviews. Based on the results of the study, it was found that there were thirty-one lexicons in the Satyeng Berati dance movements. The lexicons are divided into six, namely, the lexicon on eye movements (four lexicons), neck movements (one lexicon), body movements (twelve lexicons), hand movements (seven lexicons), finger movements (two lexicons), and foot movements (five lexicons). The thirty-one movements are nyeledet kanan, nyeledet kiri, ngelier kanan, ngelier kiri, ngegenjet leher, ngelung bulan kanan, ngelung bulan kiri, ngotag pala, ngeseh, ngelo, sleag-sleog kanan, sleag-sleog kiri, agem kanan, agem kiri, ngegol kanan, ngegol kiri, teisik, nagastru, luk nerudut, nabdab petitis, mentang laras, nyalud, ngukel, luk ngelimat, jeriring, ulap-ulap, gandang arep, milpil, nyeregseg kanan, nyeregseg kiri, and ngelikas. These lexicons have their cultural meaning, which is certainly different from other traditional dances. The documentation activity on the lexicon in the Satyeng Berati dance is one of the efforts to preserve the local language to avoid language death.Keywords: Lexicons, cultural meaning, movements, Satyeng Berati dance

A Psychological Study of Non-Verbal Communication Differences Between Men and Women in Sri Lanka

Non-verbal communication refers to the use of body language, facial expressions, gestures, and the tone of voice to convey meaning without the use of words. Non-verbal cues can include things like eye contact, posture, hand movements, and facial expressions. These cues can often communicate more information than verbal communication alone, and can also convey emotions, attitudes, and intentions. Non-verbal communication is a crucial aspect of human communication and can greatly influence how we perceive others and how we are perceived in return. It is also an important area of study in fields like psychology, anthropology, and communication studies. This research aims to psychologically investigate non-verbal communication differences between females and males in Sri Lanka. For this study, 100 girls and boys between the ages of 20 and 25 were selected from the two main faculties of the University of Sri Jayawardenepura, Sri Lanka, The Faculty of Management and Commerce and the Faculty of Humanities and Social Sciences. A sample of 50 girls and 50 boys was selected from each faculty using the random sampling. The observation method was used to collect data from students. In this research, a qualitative analysis method was used for data analysis. According to this study, same-sex and mixed-sex students randomly observed their communications with each other. During the data collection, students observed non-verbal communication methods such as hand and foot movements, eye contact, facial expression and, standing posture, distance during the conversation, and touching each other. Every part of this study, which was conducted using male and female university students, confirmed that women were ahead of men in non-verbal communication. Although academics have offered sociological, biological, and psychological reasons why women use more non-verbal communication tactics compared to men, according to the study, psychological reasons are more common. Accordingly, it was recognized that women use these non-verbal communication strategies to satisfy the natural characteristics of women, such as female attraction, the need to talk more, and the desire to join groups.

Engaging cognitive domains of people with dementia during tablet game play

AbstractBackgroundKeeping cognitively active is important for people living with dementia or MCI but finding engaging activities can be challenging. Playing digital games has been shown to engage cognitive processes such as visual attention, working memory, and visuomotor skills, in children and adults. This study explored whether these cognitive domains are engaged when people living with dementia or MCI play digital games.MethodParticipants (n = 32) with dementia or MCI, mean MoCA 13.9, were recruited from adult day programs to play four mainstream games on touchscreen tablets. Each session was recorded and a video coding scheme was developed using behavioral analysis software to map observable behaviors, including eye gaze, hand movements, and game strategy, to five DSM cognitive domains : complex attention, executive function, learning and memory, language, and perceptual motor (DSM‐V, 2013). Five minutes from each initial gameplay session were analyzed to explore the engagement of cognitive domains.ResultsAll five cognitive domains were engaged but varied across the games. For example, a word search games engaged language much more than a jigsaw puzzle game which was higher on perceptual‐motor skills. The most engaged cognitive domain was ‘complex attention’ and the least engaged cognitive domain was ‘language’. All participants demonstrated cognitive engagement whilst playing the games.ConclusionPlaying digital games can provide cognitive engagement for people living with dementia or MCI. Using mainstream games increases accessibility of opportunities for cognitive engagement, in a way which is also immersing and rewarding. Future research incorporating eye tracking will increase understanding of how people living with dementia learn to play digital games and respond to prompts. This study presents huge potential for low cost cognitive activity for people with dementia or MCI.

A Family Cluster of Inherited Ataxia: Case Report and Clinical Review

The hereditary ataxias are a highly heterogeneous group of disorders phenotypically characterised by gait ataxia, incoordination of eye movements, speech, and hand movements, and usually associated with atrophy of the cerebellum. Friedreich's ataxia is a genetic, progressive, neurodegenerative movement disorder with a typical age of onset of between 10 and 15 years. Initial symptoms may include unsteady posture, frequent falling, and progressive difficulty in walking due to an impaired ability to coordinate voluntary movements (ataxia). A family of six members was diagnosed clinically, electro-physiologically, and radiologically with having this type of inherited ataxia from Basrah, southern Iraq. This article aims to describe the clinical presentation and diagnostic approach of cerebellar ataxia, with a focus on inherited forms of ataxia.

Spatiotemporal Coupling of Hand and Eye Movements When Using a Myoelectric Prosthetic Hand.

Upper limb prosthesis users have disruptions in hand-eye coordination, with increased fixations towards the hand and less visual allocation for feedforward planning. The purpose of this study was to explore whether improved motor planning, as reflected by eye gaze behaviour, was associated with more efficient hand movement patterns. Able-bodied participants wore a simulated prosthesis while performing a functional object movement task. Motion and eye tracking data were collected to quantify the eye gaze and hand movement during object interaction. The results of this study demonstrated that the latency of the eye to precede the hand at pick-up was correlated with measures of hand function, including hand variability, movement units, and grasp time, but not reach time. During transport and release, longer latency to disengage gaze from the grasped object and look ahead towards the target was correlated to hand kinematics of hand variability, distance travelled, and transport time. In addition, the latency of the eye to disengage the drop-off location was correlated to release time. Together these may point to control issues with opening and closing the prosthetic hand. Overall, increased feedforward fixations towards the target and reduced feedback fixations towards the hand were related to improved measures of hand function. Hence, coordination between eye and hand movements when using a myoelectric prosthesis may prove to be a useful metric to assess motor planning.

Usher Syndrome with Posterior Subcapsular Cataract

Introduction: Usher Syndrome (USH) is an autosomal recessive disorder characterized by congenital sensorineural deafness and progressive loss of vision due to retinitis pigmentosa. The aim of this report is to report rare cases of USH by perform diagnostic steps based on clinical examination and family history with expectations that if a similar case is found, an earlier diagnosis and rehabilitation can be done. Methods: Diagnosis is based on history, ophthalmology examination and ear, nose, and ear (ENT) examination. Results: A 23-year-old man came to the Ophthalmology Outpatient Department with complaints of bilateral blurred vision especially at night and visual field constriction starting 12 years ago. The patient experienced gradual vision deterioration followed by appearance of white spot in his left eye. Patient is deaf and mute since birth. Three family members of the paternal line exhibit the same symptoms. The best corrected visual acuity was right eye 6/15 and left eye hand movement. Bilateral cataract was found during eye examination. Posterior segment examination revealed peripheral bone spiculae appearance and waxy pallor optic disc in both eyes. Loss of neurosensory layer, worse in the left eye, was discovered through Optical Coherence Tomography (OCT). Humphrey perimetry of the right eye indicated tunnel vision. Examination by otorhinolaryngologist revealed a sensorineural hearing loss. In this patient, there is no management for the disorders due to the poor prognosis of visual acuity. What can be done to improve the patient's quality of life is supportive therapy. It is important to screen and educate families suffering from the same disorder for early diagnosis & rehabilitation. Conclusion: Clinical examination and family history confirm the diagnosis of USH. Early diagnosis and early rehabilitation are essential to improve patient's quality of life. In this case, no management was carried out for the cataracts because the visual acuity of both eyes did not match the cloudiness of the lens so there are possibility the visual acuity could not improve. Rehabilitations that can be done for the patients are visual and social rehabilitation to improve quality of life.

The role of eye movements, attention, and hand movements on age-related differences in pegboard tests.

Well-documented manual dexterity impairments in older adults may critically depend on the processing of visual information. The purpose of this study was to determine age-related changes in eye and hand movements during commonly used pegboard tests and the association with manual dexterity impairments in older adults. The relationship between attentional deficits and manual dexterity was also assessed. Eye movements and hand kinematics of 20 young (20-38 yr) and 20 older (65-85 yr) adults were recorded during 9-Hole Pegboard, Grooved Pegboard, and a visuospatial dual test. Results were compared with standardized tests of attention (The Test of Everyday Attention and Trail Making Test) that assess visual selective attention, sustained attention, attentional switching, and divided attention. Hand movement variability was 34% greater in older versus young adults when placing the pegs into the pegboard and this was associated with decreased pegboard performance, providing further evidence that increased movement variability plays a role in dexterity impairments in older adults. Older adults made more corrective saccades and spent less time gazing at the pegboard than young adults, suggesting altered visual strategies in older compared with young adults. The relationship between pegboard completion time and Trail Making Test B demonstrates an association between attentional deficits and age-related pegboard impairments. Results contribute novel findings of age-associated changes in eye movements during a commonly used manual dexterity task and offer insight into potential mechanisms underlying hand motor impairments in older adults.NEW & NOTEWORTHY This eye tracking study contributes novel findings of age-associated changes in eye movements during the commonly used pegboard tests of manual dexterity, including a greater number of corrective saccades and lesser time gazing at the pegboard holes in older compared with young adults. An association between attentional deficits and dexterity impairments in older adults is also highlighted. Results shed light on potential mechanisms underlying well-documented motor deficits in older adults.

Computational Mechanisms Mediating Inhibitory Control of Coordinated Eye-Hand Movements.

Significant progress has been made in understanding the computational and neural mechanisms that mediate eye and hand movements made in isolation. However, less is known about the mechanisms that control these movements when they are coordinated. Here, we outline our computational approaches using accumulation-to-threshold and race-to-threshold models to elucidate the mechanisms that initiate and inhibit these movements. We suggest that, depending on the behavioral context, the initiation and inhibition of coordinated eye-hand movements can operate in two modes—coupled and decoupled. The coupled mode operates when the task context requires a tight coupling between the effectors; a common command initiates both effectors, and a unitary inhibitory process is responsible for stopping them. Conversely, the decoupled mode operates when the task context demands weaker coupling between the effectors; separate commands initiate the eye and hand, and separate inhibitory processes are responsible for stopping them. We hypothesize that the higher-order control processes assess the behavioral context and choose the most appropriate mode. This computational mechanism can explain the heterogeneous results observed across many studies that have investigated the control of coordinated eye-hand movements and may also serve as a general framework to understand the control of complex multi-effector movements.

Eye-hand movement in 3D displays: A structural equation modeling approach

Eye-hand movements are two important parameters to evaluate the User Experience (UX) in the stereoscopic display (3D). The current study utilized structural equation modeling (SEM) to derive the causal relationship between parallax, index of difficulty (ID), eye movement, hand movement, eye index performance (IP eye), and hand index performance (IP hand) simultaneously. 10 participants voluntarily participated in the current study and they were asked to perform a multi-directional Fitts’ Law task in the projection-based stereoscopic display. The results indicated that parallax had significant effects on eye movement time and hand movement time. In addition, ID was found to have significant effects on eye movement time and hand movement time. Interestingly, parallax and ID were found to have significant effects on IP eye, however, no significant effects were found on IP hand. These findings could be very beneficial for UX researchers and projection-based stereoscopic display developers especially in terms of evaluating UX of an interface.

MAKNA PRAGMATIK BAHASA VERBAL DAN NONVERBAL KINESTETIK SEBAGAI MANIFESTASI KESANTUNAN MASYARAKAT SUNDA: KAJIAN ETNOPTAGMATIK

This research describes the pragmatic meaning of verbal and nonverbal language of Sundanese people in Sindangkasih District, Ciamis Regency, West Java. This research is a qualitative research using ethnopragmatics. That is, verbal and nonverbal politeness of Sundanese people can be done through speech acts that use kinesthetic nonverbal language (facial, gestural, and postural). The data source of this research is routine activities carried out by Sundanese people in Sindangkasih Subdistrict. The data in this study are verbal and nonverbal languages that contain politeness. The technique of collecting data in this study was to adapt the ethnographic method and use the method of listening. The data analysis technique of this study uses a flow model consisting of data reduction, data presentation, drawing conclusions and verification. The results showed that the pragmatic meaning of verbal and nonverbal politeness of Sundanese people was manifested through kinesthetic nonverbal language, namely nonverbal facial language (facial expressions / facial expressions); gestural (eye movements, head movements, and hand movements); and postural (movements of all limbs, such as bowing, standing upright, leftward, and rightward). Keywords: Verbal language, nonverbal language, and politeness

Theory of visual attention (TVA) in action: Assessing premotor attention in simultaneous eye-hand movements

Attention shifts that precede goal-directed eye and hand movements are regarded as markers of motor target selection. Whether effectors compete for a single, shared attentional resource during simultaneous eye-hand movements or whether attentional resources can be allocated independently towards multiple target locations is controversially debated. Independent, effector-specific target selection mechanisms underlying parallel allocation of visuospatial attention to saccade and reach targets would predict an increase of the overall attention capacity with the number of active effectors. We test this hypothesis in a modified Theory of Visual Attention (TVA; Bundesen, 1990) paradigm. Participants reported briefly presented letters during eye, hand, or combined eye-hand movement preparation to centrally cued locations. Modeling the data according to TVA allowed us to assess both the overall attention capacity and the deployment of visual attention to individual locations in the visual work space. In two experiments, we show that attention is predominantly allocated to the motor targets–without pronounced competition between effectors. The parallel benefits at eye and hand targets, however, have concomitant costs at non-motor locations, and the overall attention capacity does not increase by the simultaneous recruitment of both effector systems. Moreover, premotor shifts of attention dominate over voluntary deployment of processing resources, yielding severe impairments of voluntary attention allocation. We conclude that attention shifts to multiple effector targets without mutual competition given that sufficient processing resources can be withdrawn from movement-irrelevant locations.

Somatosensory target information is used for reaching but not for saccadic eye movements.

For any type of goal-directed hand and eye movement, it is important to determine the position of the target. Though many of these movements are directed toward visual targets, humans also perform movements to targets derived by somatosensory information only, such as proprioceptive (sensory signals about static limb position), kinesthetic (sensory signals about limb movement), and tactile signals (sensory signals about touch on skin). In this study we investigated how each of these types of somatosensory information influences goal-directed hand and eye movements. Furthermore, we examined whether somatosensory target information has a differential influence on isolated and combined eye-hand movements. Participants performed right-hand reaching, eye, or coordinated eye-hand movements to their left index or middle fingers in the absence of any visual information. We varied somatosensory target information by allowing proprioceptive, proprioceptive-kinesthetic, proprioceptive-tactile, or proprioceptive-kinesthetic-tactile information. Reach endpoint precision was poorest when the target was derived by proprioceptive information only but improved when two different types of input were available. In addition, reach endpoints in conditions with kinesthetic target information were systematically shifted toward the direction of movement, while static somatosensory information decayed over time and led to systematic undershoots of the reach target location. In contrast to the effect on reaches, somatosensory information did not influence gaze endpoint accuracy or precision. When performing coordinated eye-hand movements reach accuracy and gaze endpoint precision improved, suggesting a bidirectional use of efferent information. We conclude that somatosensory target information influence endpoint control differently for goal-directed hand and eye movements to unseen targets.NEW & NOTEWORTHY A systematic investigation of contributions of different somatosensory modalities (proprioception, kinesthesia, tactile) for goal-directed movements is missing. Here we demonstrate that while eye movements are not affected by different types of somatosensory information, reach precision improves when two different types of information are available. Moreover, reach accuracy and gaze precision to unseen somatosensory targets improve when performing coordinated eye-hand movements, suggesting bidirectional contributions of efferent information in reach and eye movement control.

Spatiotemporal Coupling between Eye and Hand Trajectories during Curved Hand Movements

Eye and hand movements are often made in isolation but for reaching movements they are usually coupled. Despite this, evidence for spatial coupling between the eye and hand effector is mixed and have usually been restricted to straight-line movements, while real-world hand movements have complex trajectories. Here, using a novel obstacle avoidance task where an obstacle appeared in an infrequent number of trials, we establish a stronger link between the saccade and hand trajectory during more naturalistic curved hand trajectories. We illustrate that the hand trajectory was coupled to the end-point of the saccade which was executed just prior to the hand movement onset. Interestingly, while the saccade end-point was related to whether the hand trajectory followed a straight or a curved path, the y-component of saccade end-point was related to whether the hand took a path passing from over or below the obstacle. Further, we observed a relationship between saccade locations and hand sub-movements where the number and timing of saccades and number of hand velocity peaks were related. These results illustrate a robust spatiotemporal and kinematic coupling between saccades and complex hand movement trajectories suggesting a shared kinematic representation underlying eye-hand movements.

Effects of auditory feedback on movements with two-segment sequence and eye-hand coordination: Using a short auditory contact cue

During sequential reaches to multiple targets, eye and hand movements are highly coordinated, and the gaze is anchored to each target until the reaching hand makes contact to each of them. Such contact events are monitored by multimodal (visual, proprioceptive) sensory systems, and one function of the gaze anchoring to each target is verification of successful target contact (reach completion). The present study focused on this verification function and examined how planning and control of eye and hand movements during two-segment eye-hand movements are affected by augmented auditory feedback of reach completion. Young adults made a reach to the first target with a saccade, and then made another saccade to the second target in blocked trials. An auditory target-contact cue condition delivered four short sounds during the initial reach, and the last sound was synchronized with target contact, whereas a control condition lacked the last target-contact sound. The results showed that saccadic reaction time increased with the target-contact cue, especially when the reaching accuracy demand was high. The reach also became slower with lower peak velocity and longer time to peak velocity with that cue, suggesting that the limb-motor system lower the preplanned speed of the reach in a top-down fashion for a better preparation toward reach completion. However, no auditory effects were found for the timing of gaze shift to the second target. These results were different from those seen in previous studies, indicating that the effects of the additional auditory contact feedback differ depending on behavioral tasks and cue characteristics.

TVA in action: Attention capacity and selectivity during coordinated eye-hand movements

Goal-directed eye and hand movements are preceded by attention shifts towards the movement targets. Whether attentional resources can be allocated independently towards multiple effector target locations or whether a single attentional system underlies target selection for multiple effectors, is controversially debated. Here, we used the TVA approach (Theory of Visual Attention, Bundesen, 1990) to measure the distribution of attentional resources before single and combined eye-hand movements. We applied a whole report paradigm in which six letters arranged in a semi-circle were briefly (17--167ms) presented. Observers (n=8) performed single eye or hand movements, or combined eye and hand movements to centrally cued locations. Gaze and finger positions were recorded with a video-based eye-tracker and a touch screen. We used letter categorization performance as a proxy of attentional capacity and modelled the data according to the TVA framework. Additionally, we used the TVA-model to estimate the probability of correct categorization at motor targets and non-targets to evaluate attention selectivity. This allowed to directly determine attention capacity (processing speed) at multiple, movement-relevant and -irrelevant locations within a single trial. Our results show that total attention capacity is constant across the different action conditions and does not increase with the number of active effectors. However, attention is predominantly allocated towards the movement-relevant locations. The data demonstrate that attentional resources can be allocated simultaneously and independently towards both, eye and finger targets during the combined movements without competition, although associated with attentional costs occurring at movement-irrelevant locations. Overall, our findings suggest that attention can indeed be allocated towards multiple effector targets in parallel, as long as sufficient attentional resources are available. They also demonstrate, for the first time, that the TVA framework can be used as a sensitive tool to measure action-related shifts of visual attention.