Title: | Evidence for a hypothalamothalamocortical circuit mediating pheromonal influences on eye and head movements |
Address: | "Department of Biological Sciences, University of Southern California, Los Angeles 90089-2520, USA" |
ISSN/ISBN: | 0027-8424 (Print) 1091-6490 (Electronic) 0027-8424 (Linking) |
Abstract: | "A method for simultaneous iontophoretic injections of the anterograde tracer Phaseolus vulgaris leukoagglutinin and the retrograde tracer fluorogold was used to characterize in the rat a hypothalamothalamocortical pathway ending in a region thought to regulate attentional mechanisms by way of eye and head movements. The relevant medial hypothalamic nuclei receive pheromonal information from the amygdala and project to specific parts of the thalamic nucleus reuniens and anteromedial nucleus, which then project to a specific lateral part of the retrosplenial area (or medial visual cortex). This cortical area receives a convergent input from the lateral posterior thalamic nucleus and projects to the superior colliculus. Bidirectional connections with the hippocampal formation suggest that activity in this circuit is modified by previous experience. Striking parallels with basal ganglia circuitry are noted" |
Keywords: | "Animals Axonal Transport Eye Movements/*physiology Fluorescent Dyes Head Hypothalamus/cytology/*physiology Male *Models, Neurological Movement/*physiology *Pheromones Phytohemagglutinins Rats Rats, Sprague-Dawley *Stilbamidines Thalamic Nuclei/*physiology;" |
Notes: | "MedlineRisold, P Y Swanson, L W eng R01 NS16686/NS/NINDS NIH HHS/ Research Support, U.S. Gov't, P.H.S. 1995/04/25 Proc Natl Acad Sci U S A. 1995 Apr 25; 92(9):3898-902. doi: 10.1073/pnas.92.9.3898" |