PMID: 589473Dec 16, 1977

The distribution of olfactory input in the opossum mediodorsal nucleus

Brain Research
J C JacksonR M Benjamin

Abstract

Discharges of single cells in the thalamic mediodorsal nucleus (MD) of the opossum were recorded during electrical stimulation of the lateral olfactory tract. Responsive sites were histologically localized throughout the entire mediolateral extent of MD. In both rabbit and squirrel monkey responses are confined to the medial half of MD. Thus the lateral non-olfactory nuclear subdivision, common to both rabbit and squirrel monkey, was not found in the opossum. Firing patterns of cells were similar to those observed in rabbit and squirrel monkey. They commonly consisted of an early spike or burst of spikes, followed by a period of inactivity and then, in many cells, by a later period of response or of resumed spontaneous activity. The results indicate that olfactory input is characteristic of MD in a diverse sample of mammals but that topographic organization of the input is distinctly different in the opossum.

References

Jan 15, 1977·The Journal of Comparative Neurology·J E Krettek, J L Price
May 1, 1975·The Journal of Comparative Neurology·F Scalia, S S Winans
Nov 1, 1969·The Journal of Comparative Neurology·N G Ferrer
Jan 1, 1972·Brain, Behavior and Evolution·C M Leonard
Feb 15, 1974·Brain Research·J E Krettek, J L Price
Feb 22, 1974·Brain Research·F Motokizawa
Oct 1, 1963·The Journal of Comparative Neurology·G SCOLLO-LAVIZZARI, K AKERT

Citations

Jan 1, 1982·Neuroscience and Biobehavioral Reviews·H J Markowitsch
Sep 1, 1986·Brain Research Bulletin·A J McDonald, J L Culberson
Feb 10, 1978·Brain Research·R M BenjaminG T Golden
Jun 12, 1978·Annals of the New York Academy of Sciences·C T GiambalvoN J Uretsky

Related Concepts

Potentials, Event-Related
Neurons
Olfactory tubercle
Didelphidae
Reaction Time
Refractory Period, Electrophysiological
Thalamic Nuclei

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