scholarly journals The role of a perceptual decision rule in development of variance reduction by cue integration

2010 ◽  
Vol 9 (8) ◽  
pp. 49-49
Author(s):  
M. Nardini ◽  
R. Bedford ◽  
D. Mareschal
Keyword(s):  
Decision Rule ◽  
Variance Reduction ◽  
Cue Integration ◽  
Perceptual Decision

scholarly journals Studying the neuronal mechanisms underlying bistable perception: the role of adaptation, persistence, and inhibition on perceptual decision

2019 ◽  
Vol 13 ◽  
Author(s):  
Teresa Sousa ◽  
Alexandre Sayal ◽  
João Duarte ◽  
Gabriel Costa ◽  
Ricardo Martins ◽  
...  
Keyword(s):  
Perceptual Decision ◽  
Bistable Perception ◽  
Neuronal Mechanisms

scholarly journals P2-16: Dual-Bound Model and the Role of Time Bound in Perceptual Decision Making

i-Perception ◽  
10.1068/if676 ◽  
2012 ◽  
Vol 3 (9) ◽  
pp. 676-676
Author(s):  
Daeseob Lim ◽  
Hansem Sohn ◽  
Sang-Hun Lee
Keyword(s):  
Decision Making ◽  
Perceptual Decision Making ◽  
Perceptual Decision ◽  
Dual Bound

scholarly journals Role of area MSTd in cue integration for heading discrimination: II. Analysis of correlations between neural responses and perceptual decisions

2010 ◽  
Vol 6 (6) ◽  
pp. 408-408
Author(s):  
G. C. DeAngelis ◽  
Y. Gu ◽  
D. E. Angelaki
Keyword(s):  
Cue Integration ◽  
Neural Responses

Prediction, explanation, and the role of generative models in language processing

2013 ◽  
Vol 36 (3) ◽  
pp. 211-212 ◽  
Author(s):  
Thomas A. Farmer ◽  
Meredith Brown ◽  
Michael K. Tanenhaus
Keyword(s):  
Language Processing ◽  
Generative Models ◽  
Cue Integration ◽  
Cortical Responses ◽  
Adaptation Effects

AbstractWe propose, following Clark, that generative models also play a central role in the perception and interpretation of linguistic signals. The data explanation approach provides a rationale for the role of prediction in language processing and unifies a number of phenomena, including multiple-cue integration, adaptation effects, and cortical responses to violations of linguistic expectations.

Individual Differences and Group Negotiation: The Role of Polychronicity, Dominance, and Decision Rule

2008 ◽  
Vol 1 (3) ◽  
pp. 282-307 ◽  
Author(s):  
Susan Mohammed ◽  
Tracey Rizzuto ◽  
Nathan J. Hiller ◽  
Daniel A. Newman ◽  
Tina Chen
Keyword(s):  
Individual Differences ◽  
Decision Rule ◽  
Group Negotiation

scholarly journals Role of area MSTd in cue integration for heading discrimination: I. Comparison of neuronal and psychophysical sensitivity to visual and vestibular cues

2010 ◽  
Vol 6 (6) ◽  
pp. 409-409 ◽  
Author(s):  
Y. Gu ◽  
D. E. Angelaki ◽  
G. C. DeAngelis
Keyword(s):  
Cue Integration ◽  
Vestibular Cues

scholarly journals Trial-by-trial fluctuations in amygdala activity track motivational enhancement of desirable sensory evidence during perceptual decision-making

2021 ◽  
Author(s):  
Ren Paterson ◽  
Yizhou Lyu ◽  
Yuan Chang Leong
Keyword(s):  
Decision Making ◽  
Sensory Processing ◽  
Behavior Modeling ◽  
Perceptual Decision Making ◽  
Sports Fans ◽  
Perceptual Decision ◽  
Amygdala Activity ◽  
Sensory Evidence ◽  
Human Participants

AbstractPeople are biased towards seeing outcomes that they are motivated to see. For example, sports fans of opposing teams often perceive the same ambiguous foul in favor of the team they support. Here, we test the hypothesis that amygdala-dependent allocation of visual attention facilitates motivational biases in perceptual decision-making. Human participants were rewarded for correctly categorizing an ambiguous image into one of two categories while undergoing fMRI. On each trial, we used a financial bonus to motivate participants to see one category over another. The reward maximizing strategy was to perform the categorization task accurately, but participants were biased towards categorizing the images as the category we motivated them to see. Heightened amygdala activity preceded motivation consistent categorizations, and participants with higher amygdala activation exhibited stronger motivational biases in their perceptual reports. Trial-by-trial amygdala activity was associated with stronger enhancement of neural activity encoding desirable percepts in sensory cortices, suggesting that amygdala-dependent effects on perceptual decisions arose from biased sensory processing. Analyses using a drift diffusion model provide converging evidence that trial-by-trial amygdala activity was associated with stronger motivational biases in the accumulation of sensory evidence. Prior work examining biases in perceptual decision-making have focused on the role of frontoparietal regions. Our work highlights an important contribution of the amygdala. When people are motivated to see one outcome over another, the amygdala biases perceptual decisions towards those outcomes.Significance StatementForming accurate perceptions of the environment is essential for adaptive behavior. People however are biased towards seeing what they want to see, giving rise to inaccurate perceptions and erroneous decisions. Here, we combined behavior, modeling, and fMRI to show that the bias towards seeing desirable percepts is related to trial-by-trial fluctuations in amygdala activity. In particular, during moments with higher amygdala activity, sensory processing is biased in favor of desirable percepts, such that participants are more likely to see what they want to see. These findings highlight the role of the amygdala in biasing visual perception, and shed light on the neural mechanisms underlying the influence of motivation and reward on how people decide what they see.

Gestural Dimension of the Perceptuomotor Compatibility Effect in the Speech Domain

2015 ◽  
Vol 74 (2) ◽  
pp. 105-110 ◽  
Author(s):  
Gérard Olivier ◽  
Didier Bottineau
Keyword(s):  
Motor Activity ◽  
Compatibility Effect ◽  
Auditory Perception ◽  
Response Times ◽  
Decision Task ◽  
Behavioral Study ◽  
Perceptual Decision ◽  
First Time

This behavioral study shows for the first time that the auditory perception of vowels influences silent labial responses. During a perceptual decision task, participants were instructed to choose and execute a silent labial response (lip protrusion versus chin lowering) as quickly as possible depending on the vowel they had perceived auditorily. The main result showed that gestural compatibility between the silent labial response and the articulation of the perceived vowel led to better performance (in terms of response times and errors) than an incompatibility between them. By including a somatic compatibility effect in a more dynamic gestural compatibility effect, this new result suggests that the role of motor activity during speech auditory perception lies in mentally simulating an articulation of the perceived phoneme.

scholarly journals Transcranial Direct Current Stimulation Does Not Influence the Speed–Accuracy Tradeoff in Perceptual Decision-making: Evidence from Three Independent Studies

2016 ◽  
Vol 28 (9) ◽  
pp. 1283-1294 ◽  
Author(s):  
Gilles de Hollander ◽  
Ludovica Labruna ◽  
Roberta Sellaro ◽  
Anne Trutti ◽  
Lorenza S. Colzato ◽  
...  
Keyword(s):  
Decision Making ◽  
Direct Current ◽  
Transcranial Direct Current Stimulation ◽  
Response Threshold ◽  
Perceptual Decision Making ◽  
Perceptual Decision ◽  
Direct Current Stimulation ◽  
Speed Accuracy ◽  
Accuracy Tradeoff

In perceptual decision-making tasks, people balance the speed and accuracy with which they make their decisions by modulating a response threshold. Neuroimaging studies suggest that this speed–accuracy tradeoff is implemented in a corticobasal ganglia network that includes an important contribution from the pre-SMA. To test this hypothesis, we used anodal transcranial direct current stimulation (tDCS) to modulate neural activity in pre-SMA while participants performed a simple perceptual decision-making task. Participants viewed a pattern of moving dots and judged the direction of the global motion. In separate trials, they were cued to either respond quickly or accurately. We used the diffusion decision model to estimate the response threshold parameter, comparing conditions in which participants received sham or anodal tDCS. In three independent experiments, we failed to observe an influence of tDCS on the response threshold. Additional, exploratory analyses showed no influence of tDCS on the duration of nondecision processes or on the efficiency of information processing. Taken together, these findings provide a cautionary note, either concerning the causal role of pre-SMA in decision-making or on the utility of tDCS for modifying response caution in decision-making tasks.

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