- Select a language for the TTS:
- UK English Female
- UK English Male
- US English Female
- US English Male
- Australian Female
- Australian Male
- Language selected: (auto detect) - EN
Play all audios:
ABSTRACT AN interesting paper entitled “Amplifying and Recording Technique in Electro-Biology, with Special Reference to the Electrical Activity of the Human Brain” was read by G. Parr and
W. Grey Walter at a meeting of the Wireless Section of the Institution of Electrical Engineers on March 3. One of the fundamental properties of the living cell is the production of an
electromotive force, which changes when the cell is stimulated into activity. In order to study the nature and magnitude of these biological E. M. F.'S, special amplifying methods and
input circuits are required, operating suitable visual, photographic or pen-writing recorders. The paper referred to reviews the standard methods of obtaining records, and the application of
these to the recording of the potentials in the human cerebral cortex. The magnitude of the potentials produced by the brain varies from 5 to 1,000 micro-volts ; it is of alternating wave
form, of frequencies ranging from 1 to 20 cycles per second, and very irregular. The frequency of the output from an abnormal brain (for example, epileptics and cases of cerebral tumours)
differs appreciably from that of the normal, and from this and other indications it is claimed to be possible to diagnose mental diseases and locate with considerable accuracy the sites of
tumours. Access through your institution Buy or subscribe This is a preview of subscription content, access via your institution ACCESS OPTIONS Access through your institution Subscribe to
this journal Receive 51 print issues and online access $199.00 per year only $3.90 per issue Learn more Buy this article * Purchase on SpringerLink * Instant access to full article PDF Buy
now Prices may be subject to local taxes which are calculated during checkout ADDITIONAL ACCESS OPTIONS: * Log in * Learn about institutional subscriptions * Read our FAQs * Contact customer
support RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Recording Technique in Electro-Biology. _Nature_ 151, 330–331 (1943).
https://doi.org/10.1038/151330c0 Download citation * Issue Date: 20 March 1943 * DOI: https://doi.org/10.1038/151330c0 SHARE THIS ARTICLE Anyone you share the following link with will be
able to read this content: Get shareable link Sorry, a shareable link is not currently available for this article. Copy to clipboard Provided by the Springer Nature SharedIt content-sharing
initiative
