Type

Journal Article

Authors

Redmond G O'Connell
Simon P Kelly
Sarita Tamang
Daniel P Newman
Gerard M Loughnane

Subjects

Environment

Topics
decision making processes size formation higher bridge human production

Antagonistic Interactions Between Microsaccades and Evidence Accumulation Processes During Decision Formation. (2017)

Abstract Despite their small size, microsaccades can impede stimulus detections if executed at inopportune times. Although it has been shown that microsaccades evoke both inhibitory and excitatory responses across different visual regions, their impact on the higher-level neural decision processes that bridge sensory responses to action selection has yet to be examined. Here, we show that when human observers monitor stimuli for subtle feature changes, the occurrence of microsaccades long after (up to 800 ms) change onset predicts slower reaction times and this is accounted for by momentary suppression of neural signals at each key stage of decision formation: visual evidence encoding, evidence accumulation, and motor preparation. Our data further reveal that, independent of the timing of the change events, the onset of neural decision formation coincides with a systematic inhibition of microsaccade production, persisting until the perceptual report is executed. Our combined behavioral and neural measures highlight antagonistic interactions between microsaccade occurrence and evidence accumulation during visual decision-making tasks.
Collections Ireland -> Trinity College Dublin -> PubMed

Full list of authors on original publication

Redmond G O'Connell, Simon P Kelly, Sarita Tamang, Daniel P Newman, Gerard M Loughnane

Experts in our system

1
Redmond G O'Connell
Trinity College Dublin
Total Publications: 49
 
2
Simon P Kelly
Trinity College Dublin
Total Publications: 42
 
3
Daniel P Newman
Trinity College Dublin
Total Publications: 5
 
4
Gerard M Loughnane
Trinity College Dublin
Total Publications: 8