RAPID COMMUNICATION Synaptic Correlates of Odor Habituation in the Rat Anterior Piriform Cortex
نویسنده
چکیده
Wilson, Donald A. Synaptic correlates of odor habituation in the depression of excitatory afferent input. The results demonrat anterior piriform cortex. J. Neurophysiol. 80: 998–1001, 1998. strate that adaptation to prolonged odor stimulation by aPCX Responses of anterior piriform cortex layer II /III neurons to both neurons is associated with a decrease in afferent synaptic odors and electrical stimulation of the lateral olfactory tract (LOT) efficacy. were measured with intracellular recordings in urethan-anesthe-
منابع مشابه
Synaptic correlates of odor habituation in the rat anterior piriform cortex.
Responses of anterior piriform cortex layer II/III neurons to both odors and electrical stimulation of the lateral olfactory tract (LOT) were measured with intracellular recordings in urethan-anesthetized, freely breathing rats. Odor-evoked, respiration-entrained postsynaptic potentials (PSPs) rapidly habituated during a 50-s odor stimulus, then spontaneously recovered within 2 min of odor term...
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Exposure to odorants results in a rapid (<10 s) reduction in odor-evoked activity in the rat piriform cortex despite relatively maintained afferent input from olfactory bulb mitral cells. To further understand this form of cortical plasticity, a detailed analysis of its odor specificity was performed. Habituation of odor responses in anterior piriform cortex single units was examined in anesthe...
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Habituation is a form of non-associative memory that plays an important role in filtering stable or redundant inputs. The present study examines the contribution of habituation and cortical adaptation to odor-background segmentation. Segmentation of target odorants from background odorants is a fundamental computational requirement for the olfactory system. Recent electrophysiological data have...
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Segmentation of target odorants from background odorants is a fundamental computational requirement for the olfactory system and is thought to be behaviorally mediated by olfactory habituation memory. Data from our laboratory have shown that odor-specific adaptation in piriform neurons, mediated at least partially by synaptic adaptation between the olfactory bulb outputs and piriform cortex pyr...
متن کاملComparison of odor receptive field plasticity in the rat olfactory bulb and anterior piriform cortex.
Recent work in the anterior piriform cortex (aPCX) has demonstrated that cortical odor receptive fields are highly dynamic, showing rapid changes of both firing rate and temporal patterning within relatively few inhalations of an odor, despite relatively maintained, patterned input from olfactory bulb mitral/tufted cells. The present experiment examined the precision (odor-specificity) of this ...
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