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The case for a relationship between human memory, hippocampus and corpus callosum

Zaidel, Dahlia W. (1995) The case for a relationship between human memory, hippocampus and corpus callosum. [Journal (Paginated)]

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Abstract

Unilateral brain damage which includes the hippocampus leads to memory impairments consistent with hemispheric specialization on the same side. Damage to the corpus callosum, the major connecting pathway between the left and right hemispheres, also leads to memory impairments. This suggests both hemispheric specialization on the hippocampal level and a critical role for the corpus callosum in memory functions. A complete hippocampal formation is present on either side of the brain but traditionally only one is studied. However, a comparison between the neuronal populations in the hippocampus on both sides revealed asymmetry in connectivity among hippocampal subfields. The profile of memory impairments of commissurotomy (‘split-brain’) patients is described. The results are discussed in terms of a relationship between hippocampus and corpus callosum in humans. As hemispheric specialization evolved, inter-hippocampal connections became less important and the corpus callosum became prominent in memory functions.

Item Type:Journal (Paginated)
Keywords:brain, brain asymmetry, hemispheric specialization, anatomy, neuroanatomy, CA fields, laterality, sex differences, asymmetries, neuron, neuronal soma, cell density, temporal lobe epilepsy, temporal lobectomy, gender differences.
Subjects:Biology > Evolution
Neuroscience > Neurology
Neuroscience > Neuropsychology
ID Code:919
Deposited By:Zaidel, Dahlia W.
Deposited On:15 Aug 2000
Last Modified:11 Mar 2011 08:54

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