The differential roles of right and left sides of the brain in memory formation

Andrew, Richard J (1999) The differential roles of right and left sides of the brain in memory formation. Behavioural Brain Research, 98 (2). pp. 289-295. ISSN 0166-4328

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Abstract

A series of transitions in chick memory formation, with sharp standard timings, which were revealed by amnestic agents, coincide with a series of brief windows of enhanced recall (`retrieval events'), repeating with periods of 16 min (left hemisphere) and 25 min (right). Their timings were recently confirmed by: (1) the demonstration of a brief dip in recall 5 min after each left hemisphere event in the period 0–100 min, (2) spontaneous use of the eye providing direct input to the hemisphere undergoing an event, and (3) good performance in a delayed match-to-sample task after 100 min, only at times of near, or exact coincidence (400 min) with right and left events. The exact coincidence is accompanied by a late episode of consolidation, as is a transition in memory formation in the zebra finch with precisely the same timing. Linkages between right and left versions of a single experience appear to be established as a result of near coincidences of events. The greater involvement of the left hemisphere in initiating such interactions appears to be responsible for a wide range of asymmetries described for interocular transfer and unilateral insult.

Item Type: Article
Keywords: Lateralised memory formation; Timed memory events; Chicks
Schools and Departments: School of Life Sciences > Biology and Environmental Science
Depositing User: Richard Andrew
Date Deposited: 06 Feb 2012 19:03
Last Modified: 24 Jul 2012 12:57
URI: http://sro.sussex.ac.uk/id/eprint/19110
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