Reorganization in callosal and associative connections animals brain in remote period after callosotmy
V P Bersnev , R D Kasumov , I M Gabibov , V R Kasumov
Medical academic journal ›› 2009, Vol. 9 ›› Issue (2) : 59 -63.
Reorganization in callosal and associative connections animals brain in remote period after callosotmy
Compensatory mechanism was studied by injection of horseradish peroxidase (HRP) into the area 21 of the cat associative cortex. In intact brain this was found to result in a characteristics pattern of neuron staining in area 17 in separate groups of 2 to 15 neurons. In two months after callosotomy a large quantity of marked neurons could be still seen on the slices in this area. A large number of marked neurons were found in area 7. In intact brain in area 7 after introduction of a marked HRP in area 21 only single marked neurons were found. More than 20% of the stained area 7 neurons of callosotomy were inhibitory interneurons. We may conclude that extensive compensatory reorganization occurs in the associative visual cortex after callosotomy involving changing connections in areas 17 and 7 at least.
Bersnev V.P., Kasumov R.D., Gabibov I.M., Kasumov V.R.
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