Patients with unilateral temporal- or frontal-lobe excisions and normal control subjects were tested on four kinesthetic and two visual recall tasks. The first two studies required subjects to monitor peripheral feedback, in order to duplicate the distance or the end-position of examiner-defined arm movements. In the next two tasks, the subjects selected the movements to be recalled, and hence reliance on feedback was reduced. On the visual tests the subjects had to recall the distance traversed by a dot on a screen, or its end-position. Temporal lobectomy did not interfere with performance of the tasks, except for examiner-defined kinesthetic location. On this task, large left- or right-hippocampal resection produced an impairment following 30 s of counting. Patients with left frontal-lobe or small right frontal-lobe excisions performed normally on all tests, whereas those with large right frontal-lobe removals were impaired with both hands on the examiner-defined kinesthetic tasks. Patients with large right frontal-lobe lesions also demonstrated a delayed-recall deficit for visual distance. The results point to an important role played by the right frontal lobe in the monitoring of kinesthetic feedback both during the presentation of the movements and during the recall attempt.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.75703 |
| Date | January 1987 |
| Creators | Leonard, Thomas Gabriel |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy (Department of Neurology and Neurosurgery.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 000570435, proquestno: AAINL46088, Theses scanned by UMI/ProQuest. |
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