Concerning electro-encephalography

It has long been known that nervous activity is accompanied by changes of electrical potential. As early as 1675, Caton using a string galvanometer demonstrated electrical activity it the exposed brain of enimals. In 1913, Prawdicz-Neminski (2) described six types of electrical rhythms in the "electro- cerebrogram" of the dog. ibis was the first serious attempt to classify observations of this type.My own interest in electro-encephalography was aroused after the first publication of Walter. With the institution of the Nuffield Department of burgery at Oxford, it became possible for me to undertake e detailed survey of the electrical changes associated with certain well-defined pathological groups.I propose for the scope of this thesis to review the work of the last six months