Abstract
EARLIER work in a number of laboratories1–4 has established that there are large and long-lasting deficits in avoidance behaviour in fish after removal of the telencephalon. There has been some difficulty in interpreting these results, as lesions affect both acquisition and retrieval. It has been found that the deficits are not caused by motor disturbances of the fish, the use of too long a conditioned stimulus/unconditioned stimulus interval, the sensory modality of the stimulus used or the mere removal of olfactory input. The deficit must lie either in the destruction of the store of information or in interference with the ability to acquire and make use of the information. The latter possibilities seemed to be more probable, because there was evidence for some retention of previous associations following removal of the forebrain3,4.
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References
Aronson, L. R., in The Central Nervous System and Fish Behaviour (edit. by Ingle, D. J.) (University of Chicago Press, 1968).
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Enger, P. S., Acta Physiol. Scand., 39, 35 (1957).
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SAVAGE, G. Temporal Factors in Avoidance Learning in Normal and Forebrainless Goldfish (Carassius auratus). Nature 218, 1168–1169 (1968). https://doi.org/10.1038/2181168a0
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DOI: https://doi.org/10.1038/2181168a0
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