Abstract
The activity of single cells in rat hippocampus was monitored in animals given 15 to 20 nonreinforced tone presentations prior to the administration of tone-shock pairings and in rats receiving no tone preexposure prior to aversive training. Tones were presented during both slow wave sleep and quiet waking. A reduction in hippocampal activity was seen to tones presented to the sleeping animal in the preexposed group. In addition, tones presented to waking animals enhanced activity in cells from the nonpreexposed group while having little effect on those in the preexposed group. Results are discussed in terms of attentional and stimulus salience models of hippocampal function.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
