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 …

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 …

Although isolated neurons can generate rhythmic activity, they have not yet been shown to
generate rhythms with a period in the circadian range (near 24 hours). The eye of the …

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 …

Extracellular field potential and intracellular recordings from neurons in rat hippocampus
show that, even with synaptic transmission blocked, antidromic electrical stimuli can trigger …

During the sleep cycle in cats, neurons localized to the posterolateral pole of the nucleus
locus coeruleus and the nucleus subcoeruleus undergo discharge rate changes that are the …

Rhythmic activity in the neocortex varies with different behavioral and pathological states
and in some cases may encode sensory information. However, the neural mechanisms of …

It is not known whether the variability of neural activity in the cerebral cortex carries
information or reflects noisy underlying mechanisms. In an examination of the reliability of …

Rhythmic changes occur in the activities of enzymes in both the neurons and neuroglia
isolated from the caudal part of the reticular formation of rabbits killed during sleep and …

Simultaneous recording with micropipette electrodes from different units in the cerebral
cortex revealed that units seldom fired synchronously. However, there was a temporal …