Multiple visual memory phenomena in a memory search task

Authors


Address reprint requests to: Monica Fabiani, University of Illinois, Beckman Institute, 405 North Mathews Avenue, Urbana, IL, 61801, USA. E-mail: mfabiani@uiuc.edu

Abstract

This paper reports evidence of the existence of multiple and distinct visual memory processes in a memory search task in which a divided field stimulus presentation was used at study (Experiments 1–3) and either a foveal (Experiments 1 and 2) or a lateralized (Experiment 3) stimulus presentation was used at test. These memory processes can be distinguished on the basis of (1) whether or not they are hemispherically organized; and (2) the locus of their underlying brain activity, as evidenced by the scalp distribution of the event-related brain potentials and by the localization of the event-related optical signal that accompany them. These memory effects are discussed in the context of visual form memory.

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