Paper, 'Preliminary note on bilateral degeneration in the spinal cord of monkeys (Macacus sinicus) following uni-lateral lesion of the cortex cerebri [cerebral cortex]' by Edward Lindon Mellus

Description

Mellus writes: 'Having for some time been engaged in an investigation of the question as to how far the fibres of each pyramid descend both halves of the spinal cord, I am in a position to state that in the bonnet monkey (Macacus sinicus) the following arrangement prevails. Method of Investigation.—The animal being etherised, and the left hemisphere of the brain exposed by a single trephine hole (sometimes enlarged afterwards), a small portion of the excitable area of the motor cortex was selected as detailed below, the selection being confirmed in each case by electrical stimulation. A small piece of the cortex, about 0.4 cm. square, constituting the focus of the movement observed, was removed, care being taken to remove also a little of the underlying corona radiata to be sure that no cortex was left.'

Annotations in pencil and ink.

Subject: Neuroscience / Physiology

Received 22 December 1893. Read 1 March 1894. Communicated by Victor Horsley.

A version of this paper was published in volume 55 of the Proceedings of the Royal Society as 'Preliminary note on bilateral degeneration in the spinal cord of monkeys (Macacus sinicus) following unilateral lesion of the cortex cerebri'.

Reference number

PP/23/11

Earliest possible date

1893

Physical description

Ink and graphite pencil on paper

Page extent

6 pages

Format

Manuscript