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Titolo:
Auditory memory in congenitally blind adults: a behavioral-electrophysiological investigation
Autore:
Roder, B; Rosler, F; Neville, HJ;
Indirizzi:
Univ Marburg, D-35032 Marburg, Germany Univ Marburg Marburg Germany D-35032 v Marburg, D-35032 Marburg, Germany Univ Oregon, Dept Psychol, Eugene, OR 97403 USA Univ Oregon Eugene OR USA97403 regon, Dept Psychol, Eugene, OR 97403 USA
Titolo Testata:
COGNITIVE BRAIN RESEARCH
fascicolo: 2, volume: 11, anno: 2001,
pagine: 289 - 303
SICI:
0926-6410(200104)11:2<289:AMICBA>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED POTENTIALS; VISUAL-CORTEX; BRAIN POTENTIALS; OCCIPITAL CORTEX; EPISODIC MEMORY; COMPENSATORY PLASTICITY; SENSORY SUBSTITUTION; ACTIVATION PATTERNS; RECOGNITION MEMORY; CEREBRAL-CORTEX;
Keywords:
event-related potential; memory; compensatory plasticity; blindness;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
91
Recensione:
Indirizzi per estratti:
Indirizzo: Roder, B Univ Marburg, Gutenbergstr 18, D-35032 Marburg, Germany Univ Marburg Gutenbergstr 18 Marburg Germany D-35032 rg, Germany
Citazione:
B. Roder et al., "Auditory memory in congenitally blind adults: a behavioral-electrophysiological investigation", COGN BRAIN, 11(2), 2001, pp. 289-303

Abstract

Blind people must rely more than sighted people on auditory input in orderto acquire information about the world. The present study was designed to test the hypothesis that blind people have better memory than sighted individuals for auditory verbal material and specifically to determine whether memory encoding and/or retrieval are improved in blind adults. An incidentalmemory paradigm was employed in which 11 congenitally blind people and 11 matched sighted controls first listened to 80 sentences which ended either with a semantically appropriate or inappropriate word. Immediately following, the recognition phase occurred, in which all sentence terminal words were presented again randomly intermixed with the same number of new words. Participants indicated whether or not they had heard the word in the initial study phase. Event-related brain potentials (ERPs) were recorded from 28 electrode positions during both the encoding and the retrieval phase. Blind participants' memory performance was superior to that of sighted controls. In addition, during the recognition phase, previously presented words elicited ERPs with larger positive amplitudes than new words, particularly over the right hemisphere. During the study phase, words that would subsequently be recognized elicited a more pronounced late positive potential than wordsthat were not subsequently recognized. These effects were reliable in the congenitally blind participants but could only be obtained in the subgroup of sighted participants who had the highest memory performance. These results imply that blind people encode auditory verbal material more efficientlythan matched sighted controls and that this in turn allows them to recognize these items with a higher probability. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 05/04/20 alle ore 00:58:02