Arousal

Arousal is a physiological and psychological state of being awake or reactive to stimuli. It involves the activation of the reticular activating system in the brain stem, the autonomic nervous system and the endocrine system, leading to increased heart rate and blood pressure and a condition of sensory alertness, mobility and readiness to respond.

There are many different neural systems involved in what is collectively known as the arousal system. Four major systems originating in the brainstem, with connections extending throughout the cortex, are based on the brain's neurotransmitters, acetylcholine, norepinephrine, dopamine, and serotonin. When these systems are in action, the receiving neural areas become sensitive and responsive to incoming signals.

Read more about ArousalImportance, Arousal and Memory, Arousal and Preference, Problems Associated With Arousal, Abnormally Increased Behavioral Arousal

Other articles related to "arousal":

Bruce Conforth - Altered States of Consciousness Research
... suggests that sound and light devices may cause simultaneous ergotropic arousal, or arousal of the sympathetic nervous system and the cerebral cortex, associated with 'creative' and 'ecsta ... Harrah-Conforth concludes, 'these two states may be interpreted as hyper- and hypo- arousal, or ecstasy and samadhi.'" ...
Low Arousal
... Low arousal most likely refers to when a person is in a state of low arousal ... It can also refer to Low arousal approach, deals with how staff handles patients who are sexually aroused Low arousal theory, explains that individuals who have antisocial personality disorder or ADHD seek ...
Abnormally Increased Behavioral Arousal
... Anatomically this is a disorder of the limbic system, hypothalamus, temporal lobes, amygdala and frontal lobes ... It is not to be confused with mania ...
Low Arousal Approach - Evidence - Hyper- or Hypo-arousal?
... Hyper-arousal is not universally accepted by all researchers ... concluded that the experimental evidence or hyper-arousal was at best mixed ... condition and the assumption that hyper-arousal should be a general explanatory theory of autism was too broad ...
Low Arousal Approach - Arousal Curve and Information Processing
... The majority of individuals spend time in a state of arousal equilibrium ... In the case of people with an ASD, two distinct arousal groupings have an effect on behaviour ... behaviours, may experience either constant or intermittent states of hyper-arousal ...