Motor behaviour and visual discrimination after neonatal and adult hemidecortication in the rabbit.
In 5 groups of rabbits (0-1, 2-3, 4-5, 6-7 and 12-13 weeks old) the left frontal, parieto-temporal and occipital cortex were removed. Beginning two weeks after the operations the hopping reaction was tested during 15 weeks. It was found in the groups operated 0-1, 2-3 and 4-5 weeks after birth, that the hopping reaction developed normally. This was not the case in the animals operated 6-7 and 12-13 weeks after birth. Brightness discrimination with the left and right eye was tested in the same animals, beginning 12 weeks after the operation. Contrary to the motor system, no age-dependent recovery was found in the visual system. In all age groups, brightness discrimination with the eye contralateral to the lesion was impaired.
Department of Physiology I, Erasmus Universiteit Rotterdam, The Netherlands.
M W
MW
van Hof
J F
JF
Hobbelen
W H
WH
De Vos-Korthals
D000375:Aging / Q000502:physiology*; D000818:Animals; D002541:Cerebral Decortication; D004193:Discrimination Learning / Q000502:physiology*; D005625:Frontal Lobe / Q000502:physiology; D009043:Motor Activity / Q000502:physiology*; D009778:Occipital Lobe / Q000502:physiology; D010296:Parietal Lobe / Q000502:physiology; D010775:Photic Stimulation; D011817:Rabbits; D014795:Visual Pathways / Q000254:growth & development / Q000502:physiology*