Variations in a gene that regulates the brain chemical dopamine may help explain why some people are more prone to anxiety than others, a new study suggests. The gene in question, known as COMT, ...

The acoustic startle response is an unconditional reflex manifested as a rapid contraction of facial and skeletal muscles in response to a sudden and intense startling stimulus. Translational research ...

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The acoustic startle response is an unconditional reflex involving rapid facial and skeletal muscle movements triggered by sudden, startling stimuli like sound or light. Studying the acoustic startle ...