Journal Article


Mark A Bellgrove
Redmond G O'Connell
Alexander Thiele
Simon P Kelly
Daniel P Newman
Gerard M Loughnane
Jochem van Kempen



processes arousal decision making higher psychology information processing cognitive psychology pupil

Behavioural and neural signatures of perceptual decision-making are modulated by pupil-linked arousal (2019)

Abstract The timing and accuracy of perceptual decision-making is exquisitely sensitive to fluctuations in arousal. Although extensive research has highlighted the role of various neural processing stages in forming decisions, our understanding of how arousal impacts these processes remains limited. Here we isolated electrophysiological signatures of decision-making alongside signals reflecting target selection, attentional engagement and motor output and examined their modulation as a function of tonic and phasic arousal, indexed by baseline and task-evoked pupil diameter, respectively. Reaction times were shorter on trials with lower tonic, and higher phasic arousal. Additionally, these two pupil measures were predictive of a unique set of EEG signatures that together represent multiple information processing steps of decision-making. Finally, behavioural variability associated with fluctuations in tonic and phasic arousal, indicative of neuromodulators acting on multiple timescales, was mediated by its effects on the EEG markers of attentional engagement, sensory processing and the variability in decision processing.
Collections Ireland -> National College Ireland -> Status = Published
Ireland -> National College Ireland -> Subject = B Philosophy. Psychology. Religion: Psychology: Cognitive psychology
Ireland -> National College Ireland -> Type = Article
Ireland -> National College Ireland -> Subject = B Philosophy. Psychology. Religion: Psychology

Full list of authors on original publication

Mark A Bellgrove, Redmond G O'Connell, Alexander Thiele, Simon P Kelly, Daniel P Newman, Gerard M Loughnane, Jochem van Kempen

Experts in our system

Mark A. Bellgrove
Trinity College Dublin
Total Publications: 39
Redmond G O'Connell
Trinity College Dublin
Total Publications: 59
Simon P Kelly
University College Dublin
Total Publications: 48
Daniel P Newman
National College Ireland
Total Publications: 9
Gerard M Loughnane
National College Ireland
Total Publications: 17