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Somatosensory cortical representation in the Australian ghost bat, Macroderma gigas


Wise, LZ and Pettigrew, JD and Calford, MB, Somatosensory cortical representation in the Australian ghost bat, Macroderma gigas, Journal of Comparative Neurology, 248, (2) pp. 257-262. ISSN 0021-9967 (1986) [Refereed Article]

DOI: doi:10.1002/cne.902480208


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 © 1986 Alan R. Liss, Inc.

Item Details

Item Type:Refereed Article
Keywords:animal cell; animal experiment; brain cortex; central nervous system; mammal; nonhuman; priority journal; somatosensory cortex; somatotopy; Animal; Body Surface Area; Brain Mapping; Chiroptera; Neurons; Skin; Somatosensory Cortex
Research Division:Biomedical and Clinical Sciences
Research Group:Neurosciences
Research Field:Neurology and neuromuscular diseases
Objective Division:Health
Objective Group:Clinical health
Objective Field:Clinical health not elsewhere classified
UTAS Author:Calford, MB (Professor Mike Calford)
ID Code:91256
Year Published:1986
Web of Science® Times Cited:19
Deposited By:Research Division
Deposited On:2014-05-13
Last Modified:2014-05-13

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