Elaborate on physiological correlates of emotions.
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Polygraph (lie detector) tests don't actually detect lies; they measure these physiological correlates (sweat, heart rate) associated with the stress of lying.
Step 1: Understanding the Concept:
Emotions are not just "feelings"; they are bodily states. When we experience intense emotion, our body prepares for action through physiological changes. Step 2: Detailed Explanation:
1. Autonomic Nervous System (ANS):
- Sympathetic Division: Activated during fear or anger (Fight or Flight). It increases heart rate, dilates pupils, and stops digestion.
- Parasympathetic Division: Restores the body to a calm state after the emotional event has passed.
2. Specific Correlates:
- Galvanic Skin Response (GSR): Increased sweating leads to better electrical conductivity on the skin.
- Hormonal Changes: Adrenal glands release epinephrine (adrenaline) and norepinephrine.
- Blood Pressure and Heart Rate: Both rise significantly during intense emotional arousal.
- Respiration: Breathing becomes faster and shallower. Step 3: Final Answer:
These physiological changes provide the energy and physical readiness required to react to emotional stimuli in the environment.