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Research article summary:
Effects of type of cognitive demand on bilateral advantage in interhemispheric processing.
Abstract Extract:
The relationship between cognitive task demand and effect of bilateral advantage (BLA) was examined. In Experiment 1, the task demand based upon visual stimulus complexity was manipulated. One-digit and two-digit numbers were presented in the left, right ... (Full abstract text below) Published 2002May
in Journal: Psychol Res
(Language : eng)
Full Pubmed Extract
This information was retrieved, real-time, on your behalf from the public area of the Pubmed website:
1. Psychol Res.
2002 May;66(2):133-42
Effects of type of cognitive demand on bilateral advantage in interhemispheric processing.
Hatta T, Kawakami A, Kogure T, Itoh Y
School of Informatics and Sciences, Nagoya University, Chikusa-ku, Nagoya City, 484-8601, Japan. thatta@info.human.nagoya-u.ac.jp
The relationship between cognitive task demand and effect of bilateral advantage (BLA) was examined. In Experiment 1, the task demand based upon visual stimulus complexity was manipulated. One-digit and two-digit numbers were presented in the left, right or both visual fields tachistoscopically and subjects were requested to identify the numbers. The results showed no BLA, although a right visual field advantage was demonstrated. In Experiment 2, cognitive demand in terms of memory was manipulated. Subjects were asked to recall one-digit numbers that were presented successively once, three and five times in the left, right or the both visual fields. The results did not show any sign of BLA in the recall of numbers. In Experiment 3, a greater memory load task was given than that in Experiment 2, where two-digit numbers were presented successively (once, three and five times). Subjects were asked to recall the numbers. The results showed a significant BLA in the recall of numbers, i.e., the correct numbers in the correct temporal positions. These results strongly suggest that a benefit of redundant bilateral visual fields presentation is shown only in a highly cognitively demanding task, especially when it involves phonological memory loads.
PMID : 12132116 [PubMed - Indexed for MEDLINE]
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Full Author Information
| First Name | LastName | Initials |
| Takeshi | Hatta | T |
| Ayako | Kawakami | A |
| Terumasa | Kogure | T |
| Yasuhiro | Itoh | Y |
Affiliation: School of Informatics and Sciences, Nagoya University, Chikusa-ku, Nagoya City, 484-8601, Japan. thatta@info.human.nagoya-u.ac.jp
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