Published online by Cambridge University Press: 08 February 2018
In earlier studies from this department (Robinson, 1955; McAdam and Robinson, 1956) it was shown that in senile and arteriosclerotic deterioration a correlation existed between the degree of deterioration assessed clinically and the amount of abnormal low frequency activity observed in the EEG. The relationship had for the first time been quantitatively demonstrated, but we had no precise knowledge of the EEG or clinical profiles presented by a group of “normal” old people. In our hospital patients, the amount of deterioration extended over a very wide range, from mild forgetfulness to severe dementia.
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