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Face repetition effects in implicit and explicit memory tests as measured by fMRI

Henson, RNA; Shallice, T; Gorno-Tempini, ML; Dolan, RJ; (2002) Face repetition effects in implicit and explicit memory tests as measured by fMRI. Cerebral Cortex , 12 (2) pp. 178-186. 10.1093/cercor/12.2.178.

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Abstract

Recent parallels between neurophysiological and neuroimaging findings suggest that repeated stimulus processing produces decreased responses in brain regions associated with that processing - a 'repetition suppression' effect. In the present study, volunteers performed two tasks on repeated presentation of famous and unfamiliar faces during functional magnetic resonance imaging (fMRI). In the implicit task, they made fame-judgements (regardless of repetition); in the explicit task, they made episodic recognition judgements (regardless of familiarity). Only in the implicit task was repetition suppression observed: For famous faces in a right lateral fusiform region, and for both famous and unfamiliar faces in a left inferior occipital region. Repetition suppression is therefore not an automatic consequence of repeated perceptual processing of stimuli.

Type: Article
Title: Face repetition effects in implicit and explicit memory tests as measured by fMRI
DOI: 10.1093/cercor/12.2.178
URI: http://discovery.ucl.ac.uk/id/eprint/123328
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