1c:{"metadata":[["$","title","0",{"children":"NIH VideoCast - Neural Systems Involved in Extinction Depend on When Extinction Occurs"}],["$","meta","1",{"name":"description","content":"Dr. Davis studies the physiological bases of learning and memory and brain areas involved in fear, anxiety and stress. He works with a reflex behavior that is readily quantifiable and known to be altered by prior experience. In many species, including man, a loud noise elicits a startle response, which occurs very rapidly. His laboratory has determined the neural pathway that mediates acoustic startle in the rat, which consists of three synapses in the brainstem and spinal cord. Although startle is very fast and has a relatively simple circuit, it is exquisitely sensitive to changes in the environment, to drugs, as well as prior learning, such as fear conditioning. Startle thus provides a brainstem and spinal reflex system that is modulated by higher brain systems.
\nhttp://neuroseries.info.nih.gov\n
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\nhttp://neuroseries.info.nih.gov\n
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\nhttp://neuroseries.info.nih.gov\n
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