Transfers in handedness in the rat resulting from small cortical lesions after limited forced practice.

Abstract

This study has shown that building in a certain amount of ability with the nonpreferred hand can increase the likelihood of getting a transfer in handedness with very small lesions. The limit of lesion size may eventually be made smaller but at present it appears to be between ½ and 1 cu. mm. Even with lesions this large the results indicate that there is no critical area common for all Ss but a shifting of the region in individual Ss. Layers 5 and 6 probably contain the cells controlling handedness, but a more definitive determination requires techniques not at present available. (PsycINFO Database Record (c) 2006 APA, all rights reserved)