arousal
Sign in to saveArousal is the physiological and psychological state of being awoken or of sense organs stimulated to a point of perception. It involves activation of the ascending reticular activating system (ARAS) in the brain, which mediates wakefulness, the autonomic nervous system, and the endocrine system, leading to increased heart rate and blood pressure and a condition of sensory alertness, desire, mobility, and reactivity.
Article
21 sectionsContents
- Neurophysiology
- Importance
- Personality
- Introversion and extraversion
- Emotional stability vs. introversion-extraversion
- Four personality types
- Emotion
- Cannon–Bard theory
- James–Lange theory
- Schachter–Singer two-factor theory
- Classification of Emotion
- Memory
- Preference
- Associated problems
- Abnormally increased behavioral arousal
- Effects of physiological arousal on cognition
- Misattribution of arousal
- See also
- References
- Further reading
- External links
Arousal is the physiological and psychological state of being awoken or of sense organs stimulated to a point of perception. It involves activation of the ascending reticular activating system (ARAS) in the brain, which mediates wakefulness, the autonomic nervous system, and the endocrine system, leading to increased heart rate and blood pressure and a condition of sensory alertness, desire, mobility, and reactivity.
Arousal is mediated by several neural systems. Wakefulness is regulated by the ARAS, which is composed of projections from five major neurotransmitter systems that originate in the brainstem and form connections extending throughout the cortex; activity within the ARAS is regulated by neurons that release the neurotransmitters norepinephrine, acetylcholine, dopamine, serotonin, and histamine.