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Titolo:
Right hemisphere contributions to the comprehension of low-imagery words
Autore:
Collins, M; Frew, A;
Indirizzi:
Murdoch Univ, Sch Psychol, Perth, WA 6150, Australia Murdoch Univ Perth WA Australia 6150 h Psychol, Perth, WA 6150, Australia
Titolo Testata:
LATERALITY
fascicolo: 2, volume: 6, anno: 2001,
pagine: 111 - 132
SICI:
1357-650X(200104)6:2<111:RHCTTC>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
BRAIN-DAMAGED PATIENTS; VISUAL HALF-FIELD; CEREBRAL HEMISPHERES; LEXICAL DECISION; SPREADING ACTIVATION; CONCRETE WORDS; RECOGNITION; LANGUAGE; IMAGEABILITY; NOUNS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Citazioni:
98
Recensione:
Indirizzi per estratti:
Indirizzo: Collins, M Murdoch Univ, Sch Psychol, Perth, WA 6150, Australia Murdoch Univ Perth WA Australia 6150 Perth, WA 6150, Australia
Citazione:
M. Collins e A. Frew, "Right hemisphere contributions to the comprehension of low-imagery words", LATERALITY, 6(2), 2001, pp. 111-132

Abstract

A priming experiment, with normal university students as subjects, was used to investigate whether the right cerebral hemisphere contributes to the comprehension of low-imagery words. Each hemisphere's access to semantic representations of low-imagery words was gauged by comparing responses to low-imagery targets preceded by associated low-imagery primes (e.g., BELIEF-IDEAL) with responses to the same targets when they were preceded by unrelatedprimes (e.g., FATE-IDEAL). All primes and targets were independently projected to the left or right visual fields (LVF or RVF), and temporally separated by a stimulus onset asynchrony of 250 ms. There was a clear RVF advantage in response speed and accuracy measures, confirming the left hemisphere's advantage in processing low-imagery words. Nonetheless, the priming effects provided evidence that the right hemisphere contributes to the comprehension of low-imagery words, as primes projected to the RVF equally facilitated responses to associated targets subsequently appearing in either visual field. In contrast, primes directed to the LVF did not facilitate responsesto associated targets projected to the LVF or RVF. The results suggest that low-imagery words projected to the left hemisphere activated low-imagery associates in both hemispheres to an equivalent degree, whereas low-imageryprimes directed to the right hemisphere failed to activate low-imagery associates in either hemisphere. Like Kounios and Holcomb's (1994) study of event-related response potentials evoked by abstract and concrete words, the findings indicate that while the left hemisphere is the primary processor of low-imagery/ abstract words, the right hemisphere plays a subsidiary rolein the comprehension of these words.

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Documento generato il 22/01/20 alle ore 07:15:34