Serotonergic excitation from dorsal raphe stimulation recorded intracellularly from rat caudate-putamen.

@article{citeulike:1610336, abstract = {Similar to other afferents to rat caudate-putamen, stimulation of the dorsal raphe nucleus evokes a series of 3 responses which can be recorded intracellularly. An initial depolarization is followed by a long-lasting inhibition which is, in turn, terminated by another period of depolarization. Pharmacological manipulations demonstrate that the initial depolarizing potential is serotonergic. Depletion of serotonin by means of prior treatment with para-chlorophenylalanine leads to a reduction in the amplitude of the depolarization which can be evoked by maximal stimulation of dorsal raphe. Neither the long-lasting hyperpolarization nor the late excitation which follow the initial depolarization is affected. Replacement of serotonin in levels by injection of 5-hydroxytryptophan results in a restoration of the amplitude of the depolarizing response. The latency of the initial depolarization is, however, unchanged in serotonin-depleted animals. This together with the observation in some cells of a component of the initial depolarization resistant to para-chlorophenylalanine treatment, suggests that there is a non-serotonergic excitation which precedes that mediated by serotonin.}, author = {Park, M. R. and Gonzales-Vegas, J. A. and Kitai, S. T. }, citeulike-article-id = {1610336}, issn = {0006-8993}, journal = {Brain Res}, keywords = {anatomy, physiology, raphe, serotonin, striatum}, month = {July}, number = {1}, pages = {49--58}, posted-at = {2007-08-31 08:38:13}, priority = {2}, title = {Serotonergic excitation from dorsal raphe stimulation recorded intracellularly from rat caudate-putamen.}, url = {http://view.ncbi.nlm.nih.gov/pubmed/6214298}, volume = {243}, year = {1982} }

TY - JOUR ID - citeulike:1610336 L3 - citeulike-article-id:1610336 TI - Serotonergic excitation from dorsal raphe stimulation recorded intracellularly from rat caudate-putamen. JF - Brain Res VL - 243 IS - 1 SP - 49 EP - 58 SN - 0006-8993 N2 - Similar to other afferents to rat caudate-putamen, stimulation of the dorsal raphe nucleus evokes a series of 3 responses which can be recorded intracellularly. An initial depolarization is followed by a long-lasting inhibition which is, in turn, terminated by another period of depolarization. Pharmacological manipulations demonstrate that the initial depolarizing potential is serotonergic. Depletion of serotonin by means of prior treatment with para-chlorophenylalanine leads to a reduction in the amplitude of the depolarization which can be evoked by maximal stimulation of dorsal raphe. Neither the long-lasting hyperpolarization nor the late excitation which follow the initial depolarization is affected. Replacement of serotonin in levels by injection of 5-hydroxytryptophan results in a restoration of the amplitude of the depolarizing response. The latency of the initial depolarization is, however, unchanged in serotonin-depleted animals. This together with the observation in some cells of a component of the initial depolarization resistant to para-chlorophenylalanine treatment, suggests that there is a non-serotonergic excitation which precedes that mediated by serotonin. KW - anatomy KW - physiology KW - raphe KW - serotonin KW - striatum AU - Park, MR AU - Gonzales-Vegas, JA AU - Kitai, ST PY - 1982/07/08/ UR - http://view.ncbi.nlm.nih.gov/pubmed/6214298 ER -