Recognition and position information in working memory for visual textures.

Full Abstract

In three experiments, we examined connections between item-recognition memory and memory for item-position information. With sequences of compound gratings as study and probe items, subjects made either item-position judgments (Experiments 1 and 2), by identifying the serial position of the study item that matched the probe, or recognition judgments (Experiment 3), by judging whether the probe had or had not been presented in the study series. Integrating a summed-similarity account of recognition into a signal detection framework shows that the variance of summed similarities on lure trials (probe not present in the study series) exceeds the variance on target trials (probe present in the study series). This prediction is borne out by the empirical zROC functions, all of which had slopes that were greater than 1. Additionally, about 25% of correct recognitions were accompanied by incorrect item position identification. Misidentifications of item position arose from two sources--structural similarity and positional similarity-which combined in an approximately additive fashion.

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Author information

Author/s: Yotsumforo, Yuko (Y); Kahana, Michael J (MJ); McLaughlin, Chris (C); Sekuler, Robert (R);

Affiliation: Brandeis University, Waltham, Massachusetts, USA.

Grants: MH068404 (Agency:United States NIMH) ; MH5568 (Agency:United States NIMH) ; MH61975 (Agency:United States NIMH)

Journal and publication information

Publication Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.

Journal: Memory & cognition (Mem Cognit), published in United States. (Language: eng)

Reference: 2008-Mar; vol 36 (issue 2) : pp 282-94

Dates: Created 2008/04/22; Completed 2008/06/05;

PMID: 18426061, status: MEDLINE (last retrieval date: 11/6/2008)

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