Tempo Of Change Research Articles

Inhibitory control and working memory predict rhythm production abilities in patients with neurocognitive deficits

Deficits in rhythm perception and production have been reported in a variety of psychiatric, neurodevelopmental and neurologic disorders. Since correlations between rhythmic abilities and cognitive functions have been demonstrated in neurotypical individuals, we here investigate whether and how rhythmic abilities are associated with cognitive functions in 35 participants with neurocognitive deficits due to acquired brain lesions. We systematically assessed a diverse set of rhythm perception and production abilities including time and beat perception and finger-tapping tasks. Neuropsychological tests were applied to assess separable cognitive functions. Using multiple regression analyses we show that lower variability in aligning movements to a pacing sequence was predicted by better inhibitory control and better working memory performance. Working memory performance also predicted lower variability of rhythmic movements in the absence of an external pacing sequence and better anticipatory timing to sequences with gradual tempo changes. Importantly, these predictors remained significant for all regression models when controlling for other cognitive variables (i.e., cognitive flexibility, information processing speed, and verbal learning ability) and potential confounders (i.e., age, symptom strength of depression, manual dexterity, duration of illness, severity of cognitive impairment, and musical experience). Thus, all rhythm production abilities were significantly predicted by measures of executive functions. In contrast, rhythm perception abilities (time perception/beat perception) were not predicted by executive functions in this study. Our results, enhancing the understanding of cognitive underpinnings of rhythmic abilities in individuals with neurocognitive deficits, may be a first mandatory step to further potential therapeutic implications of rhythm-based interventions in neuropsychological rehabilitation.

Linear jerk variability evaluation in measurements of motor control trainability: Could kinematic variables encompass information about strength and dynamic balance?

As the natural conclusion of talent identification in sports, talent development is the process that involves improving biomechanical capacities and bio-motor abilities. The development progress can be objectively assessed and monitored through measurements of trainability. This study introduces a practical methodology to assess motor control as a trainable factor using kinematic data. The study focused on establishing the relationship between kinematic data and changes in muscle strength and dynamic balance. It illustrates how wearable technology can assess trainability during a functional training programme. Twenty-six female university students were selected and divided into intervention and control groups to investigate motor control trainability. The intervention group performed step aerobics exercises for 24 sessions. A single inertial measurement unit (IMU) mounted on S1 captured the oscillatory motion profiles of the centre of mass during these rhythmic exercises. Analysis revealed that the amplitude of linear jerk variability in different anatomical planes could reflect core and lower limb muscle strengthening caused by training. Furthermore, the results indicated that the dynamic balance adaptation to the changing tempo throughout the training programme was dictated primarily by step width. The mediolateral linear jerk variability reflected this adaptation. The minimum instrumentation approach proposed by this study could prove very practical for the talent development monitoring. The methodology illustrates how the recorded kinematic data from an appropriately placed single IMU could become an information-rich source for the coach to monitor, assess and quantify the trainee's progress during long-term athletic development.

Sensorimotor Impairment in Aging and Neurocognitive Disorders: Beat Synchronization and Adaptation to Tempo Changes.

Understanding the nature and extent of sensorimotor decline in aging individuals and those with neurocognitive disorders (NCD), such as Alzheimer's disease, is essential for designing effective music-based interventions. Our understanding of rhythmic functions remains incomplete, particularly in how aging and NCD affect sensorimotor synchronization and adaptation to tempo changes. This study aimed to investigate how aging and NCD severity impact tapping to metronomes and music, with and without tempo changes. Patients from a memory clinic participated in a tapping task, synchronizing with metronomic and musical sequences, some of which contained sudden tempo changes. After exclusions, 51 patients were included in the final analysis. Participants' Mini-Mental State Examination scores were associated with tapping consistency. Additionally, age negatively influenced consistency when synchronizing with a musical beat, whereas consistency remained stable across age when tapping with a metronome. The results indicate that the initial decline of attention and working memory with age may impact perception and synchronization to a musical beat, whereas progressive NCD-related cognitive decline results in more widespread sensorimotor decline, affecting tapping irrespective of audio type. These findings underline the importance of customizing rhythm-based interventions to the needs of older adults and individuals with NCD, taking into consideration their cognitive as well as their rhythmic aptitudes.

Strategic flood risk management over time. Applying a temporal lens to see how flood risk management measures are (or are not) implemented

ABSTRACT Strategic flood risk management of river catchments involves significant increases in the complexity both of the contents (e.g. the aims and measures) of a given strategy and also its social, spatial, and temporal scales. Conceptually, flood risk management research to date has underestimated the importance of time and temporality. This paper, which is based on ‘historical Institutionalism,’ introduces a temporal lens to focus on strategic flood risk management; it highlights issues of duration and timing as well as tempo and change in tempo with respect to the implementation of measures to reduce flood risk at catchment level. The application of a temporal lens is illustrated through empirical research into strategic flood risk management for the medium-sized Aist river catchment in Austria. The paper uses a longitudinal qualitative research design to analyze the changes in strategic flood risk management in the catchment. The analysis shows that strategy efforts in reaction to an extreme flood event in the catchment in August 2002 can be differentiated into three phases. Phase 1 is characterized by the design of ambitious catchment-wide management; Phase 2 by struggles to implement the strategy due to institutional conditions and protests by citizens; and Phase 3 by redesign of the initial strategic plan to make it less ambitious and by changes to the actor constellation supporting the plan. The present paper offers a process-oriented institutional explanation for this pattern of phases, and it highlights issues of timing and tempo. It concludes with general suggestions for enhancing the temporal dimension in flood risk management.

Trauma

TRAUMA is a musical composition work based on the anxiety of the person closest to the composer but has an impact on the composer himself. This music composition work is made with a band format and supported by vocals and strings. The composer wants to use microphones into vocal effects, namely delay and reverb, to create an echoing sound produced from the composer's own voice that interprets the dark atmosphere experienced. TRAUMA is a musical work based on the empirical experience of the person closest to the composer. The composition of Trauma has three parts, namely: The first part that realizes the beginning of the trauma, the second part that realizes how the trauma becomes stronger until he loses his identity, and the third part that interprets how the closest person begins to slowly try to eliminate the trauma, and slowly try to find his identity again. Each section is characterized by a change of tempo. To create the composition Trauma, the composer refers to a method of creation written by SP. Gustami, namely: First, the exploration stage which includes observation, and searching for literature sources. Second, the design stage, which involves making several sketches and technical drawings. The third stage is realization, which is the forming process, followed by assessment and evaluation of the finished work.

A Hyperactive Geomagnetic Field in the Late Visean (Early Carboniferous) From the Late Asbian Stratotype Section in Northwest England, UK

Plain Language SummaryNearly synchronous global changes in geomagnetic polarity give both a detailed irregular pacing to geological time and provide a glimpse into heat transfer processes across the core—mantle boundary which drives the Earth's geodynamo. Although the Late Carboniferous is characterized by some well‐studied reversals, details of the tempo of polarity changes in the Early Carboniferous are unknown. This work addresses this by providing a detailed record of polarity changes over a ∼2 million year interval at around 334.5–332.5 million years ago‐from the Trowbarrow Quarry section in NW England. We demonstrate that these limestones likely preserve magnetization from close to their time of formation and record at least 31 polarity reversals. These observations support the idea that the Earth's dynamo was in a hyperactive reversing state similar to those sustained for tens of Myr in the Late Jurassic, parts of the Cambrian and the Late Ediacaran. It further corroborates a ∼200 Myr cyclicity in paleomagnetic field behavior since the Precambrian, potentially linked to variable core heat flow forced by mantle convection.

Have we sold our souls to the drum machine? A historical analysis of tempo stability in Western music recordings

Musicians have long sought technology to facilitate and develop their abilities to maintain stable tempos. The rise of inherently tempo-stable instruments and performance technologies in the late 20th century—for example, turntables, sequencers, drum machines, click tracks, and post-production quantization—has fed an increasing trend toward tempo stability in Western popular music. However, the exact progression of this historical change has not been systematically documented. In this article, we report a historical analysis of tempo stability in recordings of Western Classical and Anglo-American popular music released between 1920 and 2020, in particular testing the hypothesis that tempo in certain popular genres became significantly more stable in the period 1980–2000. We distinguish between gradual changes of tempo that are not perceived as discontinuities ( tempo drift) and abrupt changes of tempo ( tempo shifts), and seek to quantify both types of tempo instability. Using the Spotify web API, we sampled measure-by-measure tempo estimates from over 45,000 tracks in seven genres: Blues, Classical, Country, Electronic Dance Music (EDM), Hip hop, Jazz, and Rock. Our analyses reveal significant changes in tempo stability in Rock, Country, and Blues music, consistent with our hypothesis. We next propose, compare, and evaluate several approaches to identifying artificially tempo-stable tracks from their tempo estimates, using the opposition between Classical and Hip hop as a faux ground truth. Data, analyses, and interactive visualizations are available for inspection on our website https://ccml.music.gatech.edu/TempoStability .

Impact of sensory modality and tempo in motor timing.

Accurate motor timing requires the coordinated control of actions in response to external stimuli. Over the past few years, several studies have investigated the effect of sensory input on motor timing; however, the evidence remains conflicting. The purpose of this study was to examine the impact of sensory modality and tempo on the accuracy of timed movements and explore strategies for enhancing motor timing. Participants (n = 30) performed synchronization and adaptation circle drawing tasks in virtual reality. In Experiment 1, participants synchronized circle drawing with repeated stimuli based on sensory modalities (auditory, visual, tactile, audio-visual, audio-tactile, and visual-tactile) and tempos (20, 30, and 60 bpm). In Experiment 2, we examined timing adaptation in circle drawing tasks under conditions of unexpected tempo changes, whether increased or decreased. A significant interaction effect between modality and tempo was observed in the comparison of timing accuracy. Tactile stimuli exhibited significantly higher timing accuracy at 60 bpm, whereas auditory stimuli demonstrated a peak accuracy at 30 bpm. The analysis revealed a significantly larger timing error when adapting to changes in the tempo-down condition compared with the tempo-up condition. Through Experiment 1, we found that sensory modality impacts motor timing differently depending on the tempo, with tactile modality being effective at a faster tempo and auditory modality being beneficial at a moderate tempo. Additionally, Experiment 2 revealed that adapting to changes by correcting timing errors is more challenging with decreasing tempo than with increasing tempo. Our findings suggest that motor timing is intricately influenced by sensory modality and tempo variation. Therefore, to enhance the motor timing, a comprehensive understanding of these factors and their applications is imperative.

A genomic hotspot of diversifying selection and structural change in the hoary bat (Lasiurus cinereus).

Previous work found that numerous genes positively selected within the hoary bat (Lasiurus cinereus) lineage are physically clustered in regions of conserved synteny. Here I further validate and expand on those finding utilizing an updated L. cinereus genome assembly and additional bat species as well as other tetrapod outgroups. A chromosome-level assembly was generated by chromatin-contact mapping and made available by DNAZoo (www.dnazoo.org). The genomic organization of orthologous genes was extracted from annotation data for multiple additional bat species as well as other tetrapod clades for which chromosome-level assemblies were available from the National Center for Biotechnology Information (NCBI). Tests of branch-specific positive selection were performed for L. cinereus using PAML as well as with the HyPhy package for comparison. Twelve genes exhibiting significant diversifying selection in the L. cinereus lineage were clustered within a 12-Mb genomic window; one of these (Trpc4) also exhibited diversifying selection in bats generally. Ten of the 12 genes are landmarks of two distinct blocks of ancient synteny that are not linked in other tetrapod clades. Bats are further distinguished by frequent structural rearrangements within these synteny blocks, which are rarely observed in other Tetrapoda. Patterns of gene order and orientation among bat taxa are incompatible with phylogeny as presently understood, implying parallel evolution or subsequent reversals. Inferences of positive selection were found to be robust to alternative phylogenetic topologies as well as a strong shift in background nucleotide composition in some taxa. This study confirms and further localizes a genomic hotspot of protein-coding divergence in the hoary bat, one that also exhibits an increased tempo of structural change in bats compared with other mammals. Most genes in the two synteny blocks have elevated expression in brain tissue in humans and model organisms, and genetic studies implicate the selected genes in cranial and neurological development, among other functions.

All Hail, King Pippin!

Abstract Since shortly after its publication in 1957, The Short Reign of Pippin IV has been considered Steinbeck’s least characteristic work and is universally viewed as standing squarely at the bottom of his canon of fiction. This article argues for a reevaluation of the consensus view, arguing that Pippin is a crucial part of Steinbeck’s artistic oeuvre not only on its own merits but more importantly when viewed in literary sequence as his penultimate novel. Before his fictional work draws to a dissonant close in 1961, in Pippin Steinbeck draws a comparison to a musical coda that achieves an artistic effect of finality by altering the main themes of a movement through changes in tone, tempo, or key. Pippin is the last time Steinbeck expresses in fiction a fundamentally optimistic orientation toward the human condition,

Structures for continuous improvement in principal preparation

The requisite knowledge and skills of principals are in a constant state of flux. Principal preparation programs need to proactively create systems and structures for continuous improvement and create pathways for information-sharing in order to remain responsive to the needs of local districts. James Coviello, Joan I. Birringer-Haig, and Katherine C. Aquino share how their university has created structures for continual improvement that principal preparation programs can use to in ensure leaders are prepared to face the dynamic tempo of change.

Evaluating modularity in the hominine skull related to feeding biomechanics.

Modular architecture of traits in complex organisms can be important for morphological evolution at micro- and sometimes macroevolutionary scales as it may influence the tempo and direction of changes to groups of traits that are essential for particular functions, including food acquisition and processing. We tested several distinct hypotheses about craniofacial modularity in the hominine skull in relation to feeding biomechanics. First, we formulated hypothesized functional modules for craniofacial traits reflecting specific demands of feeding biomechanics (e.g., masseter leverage/gape or tooth crown mechanics) in Homo sapiens, Pan troglodytes, and Gorilla gorilla. Then, the pattern and strength of modular signal was quantified by the covariance ratio coefficient and compared across groups using covariance ratio effect size. Hierarchical clustering analysis was then conducted to examine whether a priori-defined functional modules correspond to empirically recovered clusters. There was statistical support for most a priori-defined functional modules in the cranium and half of the functional modules in the mandible. Modularity signal was similar in the cranium and mandible, and across the three taxa. Despite a similar strength of modularity, the empirically recovered clusters do not map perfectly onto our priori functional modules, indicating that further work is needed to refine our hypothesized functional modules. The results suggest that modular structure of traits in association with feeding biomechanics were mostly shared with humans and the two African apes. Thus, conserved patterns of functional modularity may have facilitated evolutionary changes to the skull during human evolution.

A Comprehensive Review on Music Transcription

Music transcription is the process of transforming recorded sound of musical performances into symbolic representations such as sheet music or MIDI files. Extensive research and development have been carried out in the field of music transcription and technology. This comprehensive review paper surveys the diverse methodologies, techniques, and advancements that have shaped the landscape of music transcription. The paper outlines the significance of music transcription in preserving, analyzing, and disseminating musical compositions across various genres and cultures. It also provides a historical perspective by tracing the evolution of music transcription from traditional manual methods to modern automated approaches. It also highlights the challenges in transcription posed by complex singing techniques, variations in instrumentation, ambiguity in pitch, tempo changes, rhythm, and dynamics. The review also categorizes four different types of transcription techniques, frame-level, note-level, stream-level, and notation-level, discussing their strengths and limitations. It also encompasses the various research domains of music transcription from general melody extraction to vocal melody, note-level monophonic to polyphonic vocal transcription, single-instrument to multi-instrument transcription, and multi-pitch estimation. The survey further covers a broad spectrum of music transcription applications in music production and creation. It also reviews state-of-the-art open-source as well as commercial music transcription tools for pitch estimation, onset and offset detection, general melody detection, and vocal melody detection. In addition, it also encompasses the currently available python libraries that can be used for music transcription. Furthermore, the review highlights the various open-source benchmark datasets for different areas of music transcription. It also provides a wide range of references supporting the historical context, theoretical frameworks, and foundational concepts to help readers understand the background of music transcription and the context of our paper.

The impact of genetic background during laboratory evolution of Pseudomonas aeruginosa in a cystic fibrosis-like environment.

Genetic background has the potential to influence both the tempo and trajectory of adaptive change: Different genotypes of a given species may adopt varied solutions to the same environmental challenge, or they may approach the same solution at different rates. Laboratory selection has been widely used to experimentally examine the evolutionary consequences of variation in genetic background, although largely using genotypes differing by only a few mutations. Here, we leverage natural variation in the bacterium Pseudomonas aeruginosa to investigate whether different adaptive solutions are accessible from distant points of departure on an adaptive landscape. We evolved 17 diverse genotypes in a laboratory medium that partially mimics the lung sputum of cystic fibrosis patients, and we measured changes in 10 phenotypes as well as in fitness. Using phylogenetically informed analyses, we found that genetic background impacted the tempo, but not the trajectory, of phenotypic evolution: Different starting genotypes converged toward similar phenotypes, but at varying rates. Our findings add to a growing body of evidence supporting widespread diminishing return epistasis during adaptation. The importance of genetic background toward the trajectory of adaptation remains inconsistent across experimental systems and conditions.

EFFECT OF ISOMETRIC SQUAT EXERCISE ON SPRINT PERFORMANCE OF FOOTBALL PLAYERS

A soccer match makes heavy demands on both aerobic and anaerobic metabolism. Elite players run 8–12 km during a game. Nevertheless, anaerobic metabolism is also crucial in sprints, jumps, and tackles. Many studies have stated that aerobic and anaerobic strength are significant features in soccer games. During a soccer match, soccer team members performed 60 to 70 runs from 12 to 15 m. Sprint running success, with or without the ball, is therefore a significant factor that can explain a winning team's supremacy. In essential ball duals, sprint could be key. In certain cases, the player should be quicker and more effective than the opponent to score goals or to avoid goals being scored. In addition, acceleration and speed can enhance skills vital to soccer, such as turning, sprinting, and changing tempo, by improving strength in appropriate muscles or muscle groups. The study was to evaluate the effect of isometric squat exercise on sprint performance of football players. The sample of 60 student were selected from the population of University of Lahore football team. Within 3 to 5 days after base training pre-test will be conducted in the morning by using 40-yard dash test. Post-test will be conducted after completion of Isometric Squat exercise training sessions. The results show that, differences between the two test 40 Yard Dash Test Post-Test of Experimental Group and 40 Yard Dash Test Post-Test of Control Group. This research study discovered that there was a statistically significant improvement in sprint performance by using Isometric Squat exercise Program.

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli.

The Long-Term Evolution Experiment (LTEE) has followed twelve populations of Escherichia coli as they have adapted to a simple laboratory environment for more than 35 years and 77,000 bacterial generations. The setup and procedures used in the LTEE epitomize reliable and reproducible methods for studying microbial evolution. In this protocol, we first describe how the LTEE populations are transferred to fresh medium and cultured each day. Then, we describe how the LTEE populations are regularly checked for possible signs of contamination and archived to provide a permanent frozen "fossil record" for later study. Multiple safeguards included in these procedures are designed to prevent contamination, detect various problems when they occur, and recover from disruptions without appreciably setting back the progress of the experiment. One way that the overall tempo and character of evolutionary changes are monitored in the LTEE is by measuring the competitive fitness of populations and strains from the experiment. We describe how co-culture competition assays are conducted and provide both a spreadsheet and an R package (fitnessR) for calculating relative fitness from the results. Over the course of the LTEE, the behaviors of some populations have changed in interesting ways, and new technologies like whole-genome sequencing have provided additional avenues for investigating how the populations have evolved. We end by discussing how the original LTEE procedures have been updated to accommodate or take advantage of these changes. This protocol will be useful for researchers who use the LTEE as a model system for studying connections between evolution and genetics, molecular biology, systems biology, and ecology. More broadly, the LTEE provides a tried-and-true template for those who are beginning their own evolution experiments with new microbes, environments, and questions.

Intergenerational changes in selected cranial measurements of adolescents from Poland from 1938 to 2020.

Changes in the environment in which a particular population develops, including socio-economic factors, can influence craniofacial dimensions over time. The study aimed to investigate intergenerational changes in selected cranial measurements of adolescents (16-18 years of age) from Kraków, Poland. The analysis was based on the anthropometric measurements of four cohorts (years 1938, 1950, 2007 and 2020) of adolescents aged 16-18. Analysed characteristics included head breadth, length and head breadth-to-length ratio. The normality of each characteristic's distribution was assessed using Shapiro-Wilk's test, and the statistical significance of the differences between the cohorts was calculated using the two-way ANOVA or Kruskal-Wallis test. The pace of the secular changes of the analysed characteristics was also calculated. There was a secular increase in the head length from 1938 to 2020. The breadth of the head decreased between 1938 and 2007, but an increase was noted from 2007 to 2020. Changes analogous to head breadth were noted for the breadth-to-length ratio. The secular changes occurred the fastest between 2007 and 2020 for the length (18-year-olds), breadth (16-year old boys and 18-year-old girls) and the cephalic index (16-year old boys and 17-year-old girls). In conclusion, there was a tendency toward debrachycephalisation in the more contemporary cohorts. Observed changes may be associated with more favourable overall developmental conditions as well as possible changes in the growth tempo of the Polish population.

Sedimentary Processes and the Temporal Resolution of Sedimentary Strata

AbstractAn appealing strategy for reconstructing the timing and tempo of paleoenvironmental change from sedimentary strata is to linearly interpolate between marker beds of known age. This method requires significant assumptions, but more advanced age modeling methods are usually not feasible. We used experiments to explore how changes in sedimentary processes invalidate these assumptions and affect estimates of time from the strata. When sedimentary processes changed to favor widespread deposition, we found that measuring time linearly systematically overestimated time duration from the resulting strata (time dilation) and misestimated the beginning and end of geologic intervals (phase shifting). When simple age models must be used for sedimentary strata, geologic evidence for transient changes in spatial sediment dispersal may help identify sections of dilated and shifted time, and better resolve time in sedimentary strata.

Reinterpretation of Rapa'i Geurimpeng into "Ritif" Musical Composition

"Ritif" is a work of karawitan music composition that departs from the Canang game precisely in the rukun or act of Behavior in the art of Rapai Geurimpheng. "Ritif" consists of several syllables, of which "Ri" is a syllable taken from "Rhythm", rhythm; is an orderly rush of steps usually called rhythmic steps. While "Tif" is an abbreviation of the word chosen from the word "Attractive", attractive is attraction or analogous to something that is played happily. This means that the word "Ritif" in this work is analogous to a form of expression or application of items that are played attractively, this is clearly seen in the art of Rapai Geurimpheng which is contained in the fourth act chosen by the artist as the basis of the work. The focus of the work is the spirit contained in the Canang game in the Behavior round, the spirit here is an element that underlies the spirit, soul and spirit values contained in humans through aspects of togetherness in community life. The spirit of this "Ritif" work will be actualized through working material and the use of musical techniques or terms such as changes in dynamics, changes in tempo, and changes in accentuation. This work was worked on using a reinterpretation approach, by making three Canang playing motifs as working materials through rapai, djembe, floor, cymbal, hyhat, seurune kale, bass guitar, coconut shells, and vocals as sound expression media.

Reinterpretation of Becanang into the Musical Composition “Tupang Tinih”

“Tupang Tinih” is a work of music Karawitan composition who is based on canang selalu’s pattern in the art of becanang. Tupang tinih in Gayo’s language is mean overlaps, wich is in the pattern of canang selalu there are rhythm that overlaps each other. The little of this work is made according to the form of the work who is overlaps between the rhythm of canang selalu pattern. Tupang tinih in this context is meaning an artwork who is actualize the overlaps rhythm of the different not being an Karawitan music composition. The focus is the pattern of rhythm in the diminished and augmented. The difference not value in Tupang tinih artwork will actualize by the materials of work also the technique or in musically is like a dynamic change and tempo change. This artwork made with reinterpretation approach, which is using canang selalu and pattern of the canang as a material to make it through gong instrument and talempong as a medium to apply the sound.