What are the physiological effects of arousal?

Review

Arousal and physiological toughness: implications for mental and physical health

R A Dienstbier. Psychol Rev. 1989 Jan.

Abstract

From W.B. Cannon's identification of adrenaline with "fight or flight" to modern views of stress, negative views of peripheral physiological arousal predominate. Sympathetic nervous system (SNS) arousal is associated with anxiety, neuroticism, the Type A personality, cardiovascular disease, and immune system suppression; illness susceptibility is associated with life events requiring adjustments. "Stress control" has become almost synonymous with arousal reduction. A contrary positive view of peripheral arousal follows from studies of subjects exposed to intermittent stressors. Such exposure leads to low SNS arousal base rates, but to strong and responsive challenge- or stress-induced SNS-adrenal-medullary arousal, with resistance to brain catecholamine depletion and with suppression of pituitary adrenal-cortical responses. That pattern of arousal defines physiological toughness and, in interaction with psychological coping, corresponds with positive performance in even complex tasks, with emotional stability, and with immune system enhancement. The toughness concept suggests an opposition between effective short- and long-term coping, with implications for effective therapies and stress-inoculating life-styles.

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What are the psychological effects of arousal?

Arousal enhances memory for high priority information, reduces memory for low-priority information. Mara Mather's research focuses on how emotion and stress affect memory and decisions and how such influences differ depending on one's age and gender.

What are the physiological and psychological symptoms of arousal?

Psychological characteristics of arousal include feelings of vigor, energy, and tension. Physiological symptoms of arousal include increased heart rate and blood pressure, among other changes.

What causes psychological arousal?

In the context of psychology, arousal is the state of being physiologically alert, awake, and attentive. Arousal is primarily controlled by the reticular activating system (RAS) in the brain. The RAS is located in the brain stem and projects to many other brain areas, including the cortex.

What is the psychological definition of arousal?

1. a state of physiological activation or cortical responsiveness, associated with sensory stimulation and activation of fibers from the reticular activating system. 2. a state of excitement or energy expenditure linked to an emotion.