Neural correlates of confidence during decision formation in a perceptual judgment task

Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved..

When we make a decision, we also estimate the probability that our choice is correct or accurate. This probability estimate is termed our degree of decision confidence. Recent work has reported event-related potential (ERP) correlates of confidence both during decision formation (the centro-parietal positivity component; CPP) and after a decision has been made (the error positivity component; Pe). However, there are several measurement confounds that complicate the interpretation of these findings. More recent studies that overcome these issues have so far produced conflicting results. To better characterise the ERP correlates of confidence we presented participants with a comparative brightness judgment task while recording electroencephalography. Participants judged which of two flickering squares (varying in luminance over time) was brighter on average. Participants then gave confidence ratings ranging from "surely incorrect" to "surely correct". To elicit a range of confidence ratings we manipulated both the mean luminance difference between the brighter and darker squares (relative evidence) and the overall luminance of both squares (absolute evidence). We found larger CPP amplitudes in trials with higher confidence ratings. This association was not simply a by-product of differences in relative evidence (which covaries with confidence) across trials. We did not identify postdecisional ERP correlates of confidence, except when they were artificially produced by pre-response ERP baselines. These results provide further evidence for neural correlates of processes that inform confidence judgments during decision formation.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:173

Enthalten in:

Cortex; a journal devoted to the study of the nervous system and behavior - 173(2024) vom: 30. März, Seite 248-262

Sprache:

Englisch

Beteiligte Personen:

Ko, Yiu Hong [VerfasserIn]
Zhou, Andong [VerfasserIn]
Niessen, Eva [VerfasserIn]
Stahl, Jutta [VerfasserIn]
Weiss, Peter H [VerfasserIn]
Hester, Robert [VerfasserIn]
Bode, Stefan [VerfasserIn]
Feuerriegel, Daniel [VerfasserIn]

Links:

Volltext

Themen:

CPP
Confidence
Decision making
EEG
Journal Article
Pe

Anmerkungen:

Date Completed 27.03.2024

Date Revised 27.03.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.cortex.2024.01.006

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369220471