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Research article summary:
Access to concrete word meanings in the cerebral hemispheres: facilitation and inhibition effects.
Abstract Extract:
In 2002 Shibahara and Lucero-Wagoner, using a priming paradigm, reported a larger facilitation for concrete noun pairs in the right than left hemisphere when the stimulus onset asynchrony was 250 msec. Their related prime-target pairs were similar not ... (Full abstract text below) Published 2003Feb
in Journal: Percept Mot Skills
(Language : eng)
Full Pubmed Extract
This information was retrieved, real-time, on your behalf from the public area of the Pubmed website:
1. Percept Mot Skills.
2003 Feb;96(1):166-72
Access to concrete word meanings in the cerebral hemispheres: facilitation and inhibition effects.
Shibahara N, Lucero-Wagoner B
University College London. n.shibahara@ucl.ac.uk
In 2002 Shibahara and Lucero-Wagoner, using a priming paradigm, reported a larger facilitation for concrete noun pairs in the right than left hemisphere when the stimulus onset asynchrony was 250 msec. Their related prime-target pairs were similar not only in meaning but also perceptual attributes, such as shape. They had reported such perceptual information to be available only in the right hemisphere early in target processing. Thus, we predicted that, when the stimulus onset asynchrony is long, there would be no effect of perceptual information on target processing in the right hemisphere, resulting in no hemispheric differences in the amount of facilitation. We also predicted that target processing would be inhibited by prior presentation of unrelated primes only in the left hemisphere because inhibition seems to be produced by the attention system in the left hemisphere. The present experiment was designed to test these predictions, using the stimulus onset asynchrony of 550 msec. and the same prime-target pairs. Analysis showed no hemispheric differences in the amount of facilitation, and inhibition effects for unrelated pairs were produced in both hemispheres. It is suggested that the inhibition effects in each hemisphere might be produced by different mechanisms.
PMID : 12705523 [PubMed - Indexed for MEDLINE]
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Full Author Information
| First Name | LastName | Initials |
| Naoki | Shibahara | N |
| Brennis | Lucero-Wagoner | B |
Affiliation: University College London. n.shibahara@ucl.ac.uk
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