Visual long-term memory for spatial frequency?

Lages, M. and Paul, A. (2006) Visual long-term memory for spatial frequency? Psychonomic Bulletin and Review, 13(3), pp. 486-492. (doi:10.3758/BF03193874) (PMID:17048735)

Full text not currently available from Enlighten.

Abstract

It has been suggested that a visual long-term memory based on a sensory representation of the stimulus accounts for discrimination performance when the reference and the test stimuli are separated in time. Decision processes involved in setting response criteria, however, may also contribute to discrimination performance. In the present study, it is shown that under proper control, spatial frequency discrimination thresholds from a group of observers, each performing on a single trial, are significantly higher for a 2-h than for a 5-sec retention interval, whereas thresholds from individual observers performing in repeated trials with a 2-h retention interval are considerably lower. The results suggest that discrimination performance may depend on the retention of task-relevant information, such as a response criterion, rather than on visual memory of the stimulus. It is concluded that it is risky to postulate a high-fidelity long-term visual memory for spatial frequency on the basis of psychophysical group discrimination thresholds.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Lages, Dr Martin
Authors: Lages, M., and Paul, A.
College/School:College of Science and Engineering > School of Psychology
Journal Name:Psychonomic Bulletin and Review
Publisher:Springer
ISSN:1069-9384
ISSN (Online):1531-5320

University Staff: Request a correction | Enlighten Editors: Update this record