startle reaction   (TTS Sound)

The startle_reaction has 1 Senses.

• startle response, startle reaction
• a complicated involuntary reaction to a sudden unexpected stimulus (especially a loud noise); involves flexion of most skeletal muscles and a variety of visceral reactions
• 予期しない突然の刺激（特にやかましい音）に対する複雑な不随意の反応