Universität zu Köln

Brocher, Andreas and Graf, Tim (2017). Decision-related factors in pupil old/new effects: Attention, response execution, and false memory. Neuropsychologia, 102. S. 124 - 135. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD. ISSN 1873-3514

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Abstract

In this study, we investigate the effects of decision-related factors on recognition memory in pupil old/new paradigms. In Experiment 1, we used an old/new paradigm with words and pseudowords and participants made lexical decisions during recognition rather than old/new decisions. Importantly, participants were instructed to focus on the nonword-likeness of presented items, not their word-likeness. We obtained no old/new effects. In Experiment 2, participants discriminated old from new words and old from new pseudowords during recognition, and they did so as quickly as possible. We found old/new effects for both words and pseudowords. In Experiment 3, we used materials and an old/new design known to elicit a large number of incorrect responses. For false alarms (old response for new word), we found larger pupils than for correctly classified new items, starting at the point at which response execution was allowed (2750 ms post stimulus onset). In contrast, pupil size for misses (new response for old word) was statistically indistinguishable from pupil size in correct rejections. Taken together, our data suggest that pupil old/new effects result more from the intentional use of memory than from its automatic use.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Brocher, Andreas UNSPECIFIED UNSPECIFIED UNSPECIFIED Graf, Tim UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-224623
DOI:	10.1016/j.neuropsychologia.2017.06.011
Journal or Publication Title:	Neuropsychologia
Volume:	102
Page Range:	S. 124 - 135
Date:	2017
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Place of Publication:	OXFORD
ISSN:	1873-3514
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language EVENT-RELATED POTENTIALS; VISUAL WORD RECOGNITION; LOCUS-COERULEUS; BRAIN POTENTIALS; HIGH-FREQUENCY; SIZE CHANGES; ERP; EYE; RECOLLECTION; STRENGTH Multiple languages Behavioral Sciences; Neurosciences; Psychology, Experimental Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/22462