Cortical lamination and localisation in the brain of the marmoset / by F.W. Mott, E. Schuster and W.D. Halliburton.

  • Mott, F. W. (Frederick Walker), 1853-1926.
Date:
[1909]
Catalogue details

Licence: In copyright

Credit: Cortical lamination and localisation in the brain of the marmoset / by F.W. Mott, E. Schuster and W.D. Halliburton. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

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    surface, where the post central and limbic types adjoin it, it is not difficult to determine the border line, but anteriorly and posteriorly, and inferiorly on the dorsal surface, the type becomes less characteristic, and gradually its distinctive character is lost as it merges into the intermediate indefinite areas which surround it. The lamination is seen in its most typical form in the posterior part of the area, near the postero-mesial border. Characteristics.—The cortex measures about 1*5 mm. in depth, the molecular layer 0T mm., the pyramidal layer about 075 mm., the zone in which the Betz cells lie about 0‘2 mm., and the polymorph layer 0-3 mm. to 07 mm. The pyramidal cells are rather larger and less regularly and closely arranged than in most other parts of the neopallium. Scattered granule cells are found among them, but they do not form a separate layer. Below the pyramids, lying in a pallid zone, there is a well-marked line of Betz cells, the largest of which measure from 50 ^ to 60 /z. These Betz cells, and the absence of a granule layer, are the most marked characteristics of this area. Motor Area B (fir/. 4) lies below the motor area A between it and the Sylvian fissure. On stimulation, movements of the jaw and mouth occur as described in the account of the stimulation experiments, but it shows a marked difference to the type just described in its histological details. The molecular layer measures 07 to 075 mm., the pyramidal layer about 075 mm., the pallid zone about 07 mm., the granule layer 03 to 07 mm., and the polymorph layer about 0-3 mm. The presence of a distinct band of granules specially distinguishes it from the cortex above. There is also Motor A. Temporal. V V V V V V Motor B. V V V V V V V V V V V V V V V V V V Visual. Post-central. // // // II II II II II H H II // // // // // // // Olfactory. © © © © © 0 0 © G © © 0 O 0 © Limbic. Key to diagrammatic representation of different types of cortex in figs. 1 and 2.