temporal regularity
Recently Published Documents


TOTAL DOCUMENTS

97
(FIVE YEARS 26)

H-INDEX

16
(FIVE YEARS 3)

NeuroImage ◽  
2022 ◽  
pp. 118879
Author(s):  
Seung-Goo Kim ◽  
Tobias Overath ◽  
William Sedley ◽  
Sukhbinder Kumar ◽  
Sundeep Teki ◽  
...  

2021 ◽  
Author(s):  
Yisi S Zhang ◽  
John L Alvarez ◽  
Asif A Ghazanfar

Adult behaviors, such as vocal production, often exhibit temporal regularity. In contrast, their immature forms are more irregular. We ask whether the coupling of motor behaviors with arousal changes give rise to temporal regularity and drive the transition from variable to regular motor output over the course of development. We used marmoset monkey vocal production to explore this putative influence of arousal on the nonlinear changes in their developing vocal output patterns. Based on a detailed analysis of vocal and arousal dynamics in marmosets, we put forth a general model incorporating arousal and auditory-feedback loops for spontaneous vocal production. Using this model, we show that a stable oscillation can emerge as the baseline arousal increases, predicting the transition from stochastic to periodic oscillations occurring in marmoset vocal development. We further provide a solution for how this model can explain vocal development as the joint consequence of energetic growth and social feedback. Together, our model offers a plausible mechanism for the development of arousal-mediated adaptive behavior.


2021 ◽  
Author(s):  
Tysen Drew Dauer ◽  
Molly J. Henry ◽  
Bjorn Herrmann

Detecting and learning structure in sounds is fundamental to human auditory perception. Evidence for such auditory perceptual learning comes from previous studies where listeners were better at detecting repetitions of a short noise snippet embedded in longer, ongoing noise when the same snippet recurred across trials compared to when the snippet was novel in each trial. However, previous work has mainly used (a) temporally regular presentations of the repeating noise snippet and (b) highly predictable inter-trial onset timings for the snippet sequences. As a result, it is unclear how these temporal features affect perceptual learning. In five online experiments, participants judged whether or not a repeating noise snippet was present, unaware that the snippet could be unique to that trial or used in multiple trials. In two experiments, temporal regularity was manipulated by jittering the timing of noise-snippet repetitions within a trial. In two subsequent experiments, temporal onset certainty was manipulated by varying the onset time of the entire snippet sequence across trials. We found that both temporal jittering and onset uncertainty reduced auditory perceptual learning. In addition, we observed that these reductions in perceptual learning were ameliorated when the same snippet occurred in both temporally manipulated and unmanipulated trials. Our study demonstrates the importance of temporal regularity and onset certainty for auditory perceptual learning.


eNeuro ◽  
2021 ◽  
pp. ENEURO.0030-21.2021
Author(s):  
Laetitia Grabot ◽  
Christoph Kayser ◽  
Virginie van Wassenhove

2021 ◽  
Author(s):  
Anastasia Klimovich-Gray ◽  
Ander Barrena ◽  
Eneko Agirre ◽  
Nicola Molinaro

Abstract Cortical circuits rely on the temporal regularities of speech to optimize signal parsing for sound-to-meaning mapping. Bottom-up speech analysis is accelerated by top–down predictions about upcoming words. In everyday communications, however, listeners are regularly presented with challenging input—fluctuations of speech rate or semantic content. In this study, we asked how reducing speech temporal regularity affects its processing—parsing, phonological analysis, and ability to generate context-based predictions. To ensure that spoken sentences were natural and approximated semantic constraints of spontaneous speech we built a neural network to select stimuli from large corpora. We analyzed brain activity recorded with magnetoencephalography during sentence listening using evoked responses, speech-to-brain synchronization and representational similarity analysis. For normal speech theta band (6.5–8 Hz) speech-to-brain synchronization was increased and the left fronto-temporal areas generated stronger contextual predictions. The reverse was true for temporally irregular speech—weaker theta synchronization and reduced top–down effects. Interestingly, delta-band (0.5 Hz) speech tracking was greater when contextual/semantic predictions were lower or if speech was temporally jittered. We conclude that speech temporal regularity is relevant for (theta) syllabic tracking and robust semantic predictions while the joint support of temporal and contextual predictability reduces word and phrase-level cortical tracking (delta).


2021 ◽  
Vol 65 (1) ◽  
pp. 11-16
Author(s):  
Richard Cohn

Abstract Scholars of music and dance have subtly different conceptions of musical time, which can lead to misunderstandings in interdisciplinary communication. These conceptual distinctions may be rooted in the embodied experience of performance: the energy required to create dance through whole-body displacement is different in kind from that required to create music through displacement of air molecules. The essay focuses on different conceptions of beats, of the counting numbers that represent them, of precise temporal regularity, and of the relationship between meter and phrasing.


2021 ◽  
Vol 12 ◽  
Author(s):  
Mrinmayi Kulkarni ◽  
Deborah E. Hannula

Regularities in event timing allow for the allocation of attention to critical time-points when an event is most likely to occur, leading to improved visual perception. Results from recent studies indicate that similar benefits may extend to memory for scenes and objects. Here, we investigated whether benefits of temporal regularity are evident when detailed, item-specific representations are necessary for successful recognition memory performance. In Experiments 1 and 2, pictures of objects were presented with either predictable or randomized event timing, in separate encoding blocks. In the test phase, old and new objects were presented, intermixed with perceptually similar exemplars of encoded objects. In Experiment 3 we attempted to replicate previously reported memory enhancements for scenes. In contrast to predictions, temporal regularity did not affect response times (RT) or improve recognition memory accuracy in any of our experiments. These results suggest that any effects of temporal expectation on memory are subtle and may be sensitive to minor changes in task parameters. In sum, indirect upregulation of attention through imposed temporal structure may not be sufficient to have downstream effects on memory performance.


2020 ◽  
Vol 131 (8) ◽  
pp. 1859-1865
Author(s):  
Julie Palix ◽  
Fabienne Giuliani ◽  
Guillaume Sierro ◽  
Catherine Brandner ◽  
Jérôme Favrod

Sign in / Sign up

Export Citation Format

Share Document