File(s) not publicly available
Somatosensory cortical representation in the Australian ghost bat, Macroderma gigas
journal contributionposted on 2023-05-18, 00:37 authored by Wise, LZ, Pettigrew, JD, Calford, MB
Bats of the two suborders Microchiroptera and Megachiroptera have a modified hand in which the digits of the forelimb are caudally oriented to form the wing. In a previous study of a megachiropteran species, this modification of body plan was found to be reflected in the somatosensory cortical representation such that the orientation of the digit representation was reversed compared with walking mammals. This finding suggests that the precisedetails of arrangement of topographical maps are functionally significant and do not merely reflect an order imposed by peripheral innervation. Recentevidence for separate origins of Microchiroptera and Megachiroptera raises the question of whether the cortical somatosensory representation in Microchiroptera will also have a reversal of digit orientation compared with walking mammals. We recorded multiunit activity from the somatosensory cortex of a microchiropteran bat, Macroderma gigas. We found two orderly representations of the body surface, SI and SII, in both of which the digit orientation was opposite to the head orientation in accordance with adaptation for flight, and reversed with respect to equivalent maps in other mammals. We also found minor variations in body surface representation compared with Megachiroptera, in line with their proposed independent evolution. Copyright Â© 1986 Alan R. Liss, Inc.
Publication titleJournal of Comparative Neurology
Department/SchoolDVC - Academic
Place of publicationDiv John Wiley & Sons Inc, 605 Third Ave, New York, USA, Ny, 10158-0012
Socio-economic ObjectivesClinical health not elsewhere classified