scholarly journals Multisensory classification images reveal the role of cross-correlation in audiovisual temporal processing.

2014 ◽  
Vol 14 (10) ◽  
pp. 433-433 ◽  
Author(s):  
C. V. Parise ◽  
M. Ernst
Keyword(s):  
Temporal Processing ◽  
Cross Correlation ◽  
Classification Images

QUANTIFYING STOCHASTIC RESONANCE IN A SINGLE THRESHOLD DETECTOR FOR RANDOM APERIODIC SIGNALS

2004 ◽  
Vol 04 (02) ◽  
pp. L247-L265 ◽  
Author(s):  
ARUNEEMA DAS ◽  
N. G. STOCKS ◽  
A. NIKITIN ◽  
E. L. HINES
Keyword(s):  
Stochastic Resonance ◽  
Cross Correlation ◽  
Signal To Noise Ratio ◽  
Probability Distributions ◽  
Probability Density Functions ◽  
Surprising Result ◽  
Threshold Detector ◽  
Gaussian Form ◽  
Aperiodic Signal

We explore stochastic resonance (SR) effects in a single comparator (threshold detector) driven by either a Gaussian or exponentially distributed aperiodic signal. The behaviour of different performance measures, namely the cross-correlation coefficient (CCC), signal-to-noise ratio (SNR) and mutual information, I, has been investigated. The signals were added to Gaussian noise before being passed through the threshold detector. For the two signals tested, we observe the perhaps surprising result that the SNR never displays SR. However, SR is displayed by both the CCC and I for Gaussian signals. For exponential signals SR is not displayed by any of the measures. By generating signals whose probability distributions have the generalized Gaussian form Ae-|βx|n it is possible to demonstrate that SR ceases to occur if n<1.7. We conclude that SR is only observable in threshold based systems for certain types of aperiodic signal. Specifically, SR is not expected to occur for signals whose probability density functions have long, slowly decaying, tails. We discuss the implication of these results for the role of SR in biological sensory systems.

The role of primary auditory and visual cortices in temporal processing: A tDCS approach

2016 ◽  
Vol 313 ◽  
pp. 151-157 ◽  
Author(s):  
G. Mioni ◽  
S. Grondin ◽  
M. Forgione ◽  
V. Fracasso ◽  
D. Mapelli ◽  
...  
Keyword(s):  
Temporal Processing ◽  
Visual Cortices

Utilizing the Cortico-Striatal Projectome to Advance the Study of Timing and Time Perception

2016 ◽  
Vol 4 (4) ◽  
pp. 411-422 ◽  
Author(s):  
Nicholas A. Lusk ◽  
Dean V. Buonomano
Keyword(s):  
Time Perception ◽  
Temporal Processing ◽  
Large Scale ◽  
Imaging Techniques ◽  
Brain Connectivity ◽  
Beat Frequency ◽  
Dorsal Striatum ◽  
Frequency Model ◽  
Timing And Time Perception

Over the past decade advances in tracing and imaging techniques have spurred the development of increasingly detailed maps of brain connectivity. Broadly termed ‘connectomes’, these maps provide a powerful tool for systems neuroscience. As with most ‘maps’, connectomes offer a static spatial description of the brain’s circuits, whereas timing and temporal processing are inherently dynamic processes; nevertheless, the timing field stands to be a major beneficiary of these large-scale mapping projects. The recently reported ‘projectome’ of mouse cortico-striatal sub-networks is of particular interest because theoretical developments such as the striatal beat-frequency model emphasize the role of the striatum in temporal processing. The cortico-striatal projectome confirms that the dorsal striatum is ideally situated to sample patterns of activity throughout most of the cortex, but that it also contains a level of modularity previously not considered by integrative models of interval timing. Furthermore, the striatal projectome will allow for targeted studies of whether specific subdivisions of the dorsal striatum are differentially involved in timing and time perception as a function of task, stimulus modality, intensity, and valence.

scholarly journals Neural Network of Predictive Motor Timing in the Context of Gender Differences

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Pavel Filip ◽  
Jan Lošák ◽  
Tomáš Kašpárek ◽  
Jiří Vaníček ◽  
Martin Bareš
Keyword(s):  
Neural Network ◽  
Temporal Processing ◽  
Temporal Analysis ◽  
Behavioral Performance ◽  
Motor Timing ◽  
Short Term ◽  
Fmri Study ◽  
Movement Parameters ◽  
Timing Processes

Time perception is an essential part of our everyday lives, in both the prospective and the retrospective domains. However, our knowledge of temporal processing is mainly limited to the networks responsible for comparing or maintaining specific intervals or frequencies. In the presented fMRI study, we sought to characterize the neural nodes engaged specifically in predictive temporal analysis, the estimation of the future position of an object with varying movement parameters, and the contingent neuroanatomical signature of differences in behavioral performance between genders. The established dominant cerebellar engagement offers novel evidence in favor of a pivotal role of this structure in predictive short-term timing, overshadowing the basal ganglia reported together with the frontal cortex as dominant in retrospective temporal processing in the subsecond spectrum. Furthermore, we discovered lower performance in this task and massively increased cerebellar activity in women compared to men, indicative of strategy differences between the genders. This promotes the view that predictive temporal computing utilizes comparable structures in the retrospective timing processes, but with a definite dominance of the cerebellum.

Role of Auditory Temporal Processing for Reading and Spelling Disability

1998 ◽  
Vol 86 (3) ◽  
pp. 1043-1047 ◽  
Author(s):  
Gerd Schulte-Körne ◽  
Wolfgang Deimel ◽  
Jürgen Bartling ◽  
Helmut Remschmidt
Keyword(s):  
Temporal Processing ◽  
Detection Threshold ◽  
Detection Task ◽  
Gap Detection ◽  
Auditory Temporal Processing ◽  
Spelling Disability ◽  
Processing Deficit ◽  
Reading And Spelling

The role of auditory temporal processing in reading and spelling was investigated in a sample of 30 children and one of 31 adults, using a gap-detection task with nonspeech stimuli. There was no evidence for a relationship between reading and spelling disability (dyslexia) and the gap-detection threshold. The results were discussed regarding the relevance for the popular hypothesis of an auditory temporal processing deficit underlying dyslexia.

The role of duration and rapid temporal processing on the lateral perception of consonants and vowels

1982 ◽  
Vol 17 (2) ◽  
pp. 272-286 ◽  
Author(s):  
Julia Dwyer ◽  
Sheila E. Blumstein ◽  
John Ryalls
Keyword(s):  
Temporal Processing
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