Perceptual Evidence Accumulation in Moving Window Paradigm

It is commonly assumed that, during perceptual decisions, the brain integrates stimulus evidence until reaching a decision, and then performs the response. There are conditions, however (e.g. time pressure), in which the initiation of the response must be prepared in anticipation of the stimulus presentation. It is therefore not clear when the timing and the choice of perceptual responses depend exclusively on evidence accumulation, or when preparatory motor signals may interfere with this process. Here, we find that, in a free reaction time auditory discrimination task in rats, the timing of fast responses does not depend on the stimulus, although the choices do, suggesting a decoupling of the mechanisms of action initiation and choice selection. This behavior is captured by a novel model, the Parallel Sensory Integration and Action Model (PSIAM), in which response execution is triggered whenever one of two processes, Action Initiation or Evidence Accumulation, reaches a bound, while choice category is always set by the latter. Based on this separation, the model accurately predicts the distribution of reaction times when the stimulus is omitted, advanced or delayed. Furthermore, we show that changes in Action Initiation mediates both post-error slowing and a gradual slowing of the responses within each session. Overall, these results extend the standard models of perceptual decision-making, and shed a new light on the interaction between action preparation and evidence accumulation.

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Faculty Opinions recommendation of Inattention abolishes binocular rivalry: perceptual evidence.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.718026443.793479756 ◽

2013 ◽

Author(s):

Bruce Cumming

Keyword(s):

Binocular Rivalry ◽

Perceptual Evidence

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Evidence Accumulation for Spatial Reasoning.

10.21236/ada142174 ◽

1984 ◽

Cited By ~ 4

Author(s):

T. Matsuyama ◽

V. S. S. Hwang ◽

L. S. Davis

Keyword(s):

Spatial Reasoning ◽

Evidence Accumulation

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Feature extraction in auditory brainstem responses using wavelet decomposition on a moving window of waveform data

IET Irish Signals and Systems Conference (ISSC 2006) ◽

10.1049/cp:20060457 ◽

2006 ◽

Author(s):

G. Lightbody ◽

P.J. McCullagh ◽

H.G. McAllister

Keyword(s):

Feature Extraction ◽

Wavelet Decomposition ◽

Auditory Brainstem ◽

Auditory Brainstem Responses ◽

Moving Window ◽

Waveform Data

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Evidence accumulation relates to perceptual consciousness and monitoring

Nature Communications ◽

10.1038/s41467-021-23540-y ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Michael Pereira ◽

Pierre Megevand ◽

Mi Xue Tan ◽

Wenwen Chang ◽

Shuo Wang ◽

...

Keyword(s):

Posterior Parietal Cortex ◽

Detection Threshold ◽

Task Demands ◽

Neuron Activity ◽

Neural Responses ◽

Neuronal Responses ◽

Neural Basis ◽

Perceptual Consciousness ◽

Evidence Accumulation ◽

Posterior Parietal

AbstractA fundamental scientific question concerns the neural basis of perceptual consciousness and perceptual monitoring resulting from the processing of sensory events. Although recent studies identified neurons reflecting stimulus visibility, their functional role remains unknown. Here, we show that perceptual consciousness and monitoring involve evidence accumulation. We recorded single-neuron activity in a participant with a microelectrode in the posterior parietal cortex, while they detected vibrotactile stimuli around detection threshold and provided confidence estimates. We find that detected stimuli elicited neuronal responses resembling evidence accumulation during decision-making, irrespective of motor confounds or task demands. We generalize these findings in healthy volunteers using electroencephalography. Behavioral and neural responses are reproduced with a computational model considering a stimulus as detected if accumulated evidence reaches a bound, and confidence as the distance between maximal evidence and that bound. We conclude that gradual changes in neuronal dynamics during evidence accumulation relates to perceptual consciousness and perceptual monitoring in humans.

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Model Predictive Control for Wave Energy Converters: A Moving Window Blocking Approach

IFAC-PapersOnLine ◽

10.1016/j.ifacol.2020.12.1960 ◽

2020 ◽

Vol 53 (2) ◽

pp. 12815-12821

Author(s):

Juan Guerrero-Fernández ◽

Oscar J. González-Villarreal ◽

John Anthony Rossiter ◽

Bryn Jones

Keyword(s):

Model Predictive Control ◽

Predictive Control ◽

Wave Energy ◽

Moving Window ◽

Wave Energy Converters ◽

Energy Converters

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