Conditioned and unconditioned fear organized in the inferior colliculus are differentially sensitive to injections of muscimol into the basolateral nucleus of the amygdala.

@article{citeulike:1341350, abstract = {Chemical stimulation of the inferior colliculus (IC) with semicarbazide--an inhibitor of the gamma aminobutyric acid synthesizing enzyme--functions as an unconditioned stimulus in the conditioned place aversion test (CPA), and electrolytic lesions of the basolateral amygdala (BLA) enhance the aversiveness of the IC stimulation. This study examined the effects of inactivation of the BLA with muscimol on the conditioned and unconditioned fear using semicarbazide injections into the IC of rats subjected to conditioned (CPA) or unconditioned (open field) fear tests. In both tests, the rats were injected with semicarbazide or saline into the IC and muscimol or saline into the BLA. Muscimol decreased the CPA and increased the unconditioned fear elicited by IC injections of semicarbazide. These findings indicate that distinct modulatory mechanisms in the BLA are recruited during the conditioned and unconditioned fear triggered by IC activation. ((c) 2006 APA, all rights reserved).}, address = {Laborat\'{o}rio de Psicobiologia, Faculdade Filosofia, Ci\^{e}ncias e Letras de Ribeir\~{a}o Preto, Universidade de S\~{a}o Paulo, S\~{a}o Paulo, Brazil.}, author = {Macedo, C. E. and Martinez, R. C. and Brand\~{a}o, M. L. }, citeulike-article-id = {1341350}, doi = {10.1037/0735-7044.120.3.625}, issn = {0735-7044}, journal = {Behav Neurosci}, keywords = {amygdala, colliculus, conditioning, fear, unconditioned}, month = {June}, number = {3}, pages = {625--631}, posted-at = {2007-05-29 16:55:09}, priority = {2}, title = {Conditioned and unconditioned fear organized in the inferior colliculus are differentially sensitive to injections of muscimol into the basolateral nucleus of the amygdala.}, url = {http://dx.doi.org/10.1037/0735-7044.120.3.625}, volume = {120}, year = {2006} }

TY - JOUR ID - citeulike:1341350 L3 - citeulike-article-id:1341350 TI - Conditioned and unconditioned fear organized in the inferior colliculus are differentially sensitive to injections of muscimol into the basolateral nucleus of the amygdala. JF - Behav Neurosci VL - 120 IS - 3 SP - 625 EP - 631 AD - Laboratório de Psicobiologia, Faculdade Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil. SN - 0735-7044 N2 - Chemical stimulation of the inferior colliculus (IC) with semicarbazide--an inhibitor of the gamma aminobutyric acid synthesizing enzyme--functions as an unconditioned stimulus in the conditioned place aversion test (CPA), and electrolytic lesions of the basolateral amygdala (BLA) enhance the aversiveness of the IC stimulation. This study examined the effects of inactivation of the BLA with muscimol on the conditioned and unconditioned fear using semicarbazide injections into the IC of rats subjected to conditioned (CPA) or unconditioned (open field) fear tests. In both tests, the rats were injected with semicarbazide or saline into the IC and muscimol or saline into the BLA. Muscimol decreased the CPA and increased the unconditioned fear elicited by IC injections of semicarbazide. These findings indicate that distinct modulatory mechanisms in the BLA are recruited during the conditioned and unconditioned fear triggered by IC activation. ((c) 2006 APA, all rights reserved). KW - amygdala KW - colliculus KW - conditioning KW - fear KW - unconditioned AU - Macedo, CE AU - Martinez, RC AU - Brandão, ML PY - 2006/06// UR - http://dx.doi.org/10.1037/0735-7044.120.3.625 ER -