Spectral analysis of low frequency components in the electrical activity of the hippocampus during learning

Hippocampal EEG and behaviour in dog. I. Hippocampal EEG correlates of gross motor behaviour

“…A further problem is that of the postulated correlations between the occurrence of hippocampal RSA and higher processes like learning and information processing (Elazar and Adey 1967;Landfield 1972;Klemm and Douglas 1974). The experimental conditions employed m these studies, however, appear to mvolve always changing motor behavlours as the learnmg of a task proceeds.…”

Hippocampal EEG and behaviour in dog. III. Hippocampal EEG correlates of stimulus-response tasks and of sexual behaviour

“…Usually these are visual discrimination tasks (Mome and Costin (1974) m monkeys and Elazar and Adey (1967) in cats). Since dogs appear to be more dependent on sound and smell than on sight, an auditory cue appeared to be more appropriate for thin experimental animal.…”

The Hippocampus as a Cognitive Map

“…Different frequencies of theta, according to this notion, relate to different parameters of the movement such as its acceleration or, to some extent, the amount of vigour involved. The alternative interpretation of this pattern of EEG-behaviour correlates was first suggested by Adey (1967) and by Gray (1971). This is that theta is not a single continuum but subdivides into different frequency bands, each of which has a different behavioural correlate.…”

“…Adey and his colleagues (Adey, 1962, Adey, Dunlop, and Hendrix 1960, Adey, Walter, and Lindsley 1962, Elazar and Adey 1967, Holmes and Adey 1960, Porter, Adey, and Brown 1964, Radulovacki and Adey 1965) studied the hippocampal and entorhinal EEG during the learning of runway discrimination tasks. They found that different patterns of theta were related to different aspects of the task.…”