Right temporal-lobe contribution to image-mediated verbal learning

Abstract The ability of patients with right temporal lobectomy to profit from visual imagery as a mediator in verbal paired-associate learning was investigated, using a 60-pair list of high-imagery words presented for one trial only. A group of 31 patients with right temporal lobectomy was impaired with respect to a matched normal control group in the recall of these image-linked pairs, whereas in a control experiment, in which pairs of abstract words had to be linked by sentences, the right temporal group showed normal recall. Further analysis revealed an inverse relationship between the extent of right hippocampal removal and the recall of the image-mediated, but not the sentence-mediated, pairs.

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