Abstract
Caton’s discovery of the DC potentials of the brain enabled him to study the localisation of functions within the cerebral cortex, an important aspect of neurology in the second half of the 19th century. He detected little of interest in the “feebler” oscillations that have dominated electroencephalography in our own century.
“The external surface of the grey matter is usually positive in relation to the surface of a section through it.
The electric currents of the grey matter appear to have a relation to its function.
When any part of the grey matter is in a stable state of functional activity its electric current usually exhibits negative variation” Caton 1875
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Butler, S. (1993). Methodological Issues in the Measurement of DC Biopotentials. In: McCallum, W.C., Curry, S.H. (eds) Slow Potential Changes in the Human Brain. NATO ASI Series, vol 254. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-1597-9_5
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