The correlated activity of rat hippocampal pyramidal cells during sleep reflects the activity of
those cells during earlier spatial exploration. Now the patterns of activity during sleep have …

Simultaneous recordings were made from large ensembles of hippocampal" place cells" in
three rats during spatial behavioral tasks and in slow-wave sleep preceding and following …

The frequency of the hippocampal theta rhythm in freely moving rats varies predictably in
relation to behavior in a simple learning situation. The theta rhythm may be driven by …

Electrical stimuli were applied to the angular bundle of the freely moving rat, and the
neuronal responses were recorded ipsilaterally in the dentate gyrus and the CA1 field of the …

Synaptic responses in hippocampal granule cells to stimulation of their afferent fibers from
the entorhinal cortex fluctuate with a 24-hour period. The phase of this cycle for rats and …

Electrical stimulation of axons in the hippocampus with short high-frequency bursts that
resemble in vivo activity patterns produces stable potentiation of postsynaptic responses …

The mammalian hippocampal formation appears to play a major role in the generation of
internal representations of spatial relationships. In rats, this role is reflected in the spatially …

A slow-wave electroencephalographic rhythm recorded from the sensorimotor cortex of the
waking cat has been correlated behaviorally with the suppression of movement. Facilitation …

Rats learned, using distal room cues, to run to a goal on an elevated, circular track starting
from any position on the track. The goal was one of eight equidistant, recessed cups set …

We examined the amount of theta rhythm (4 to 9 hertz) in cortical electroencephalograms of
rats for 30 minutes after training in one-trial tasks. Some animals received electroconvulsive …