The state of being alert and ready to respond, or waking from sleep.

1827, "action of arousing, a being awakened" from arouse + -al (2). Sexual association is from c. 1900.

1. a state of physiological alertness and readiness for action. 2. a pervasive state of cortical responsiveness believed to be associated with sensory stimulation and therefore, the activation of fibe [..]

Arousal is basically being alert, physically and mentally. Various body systems and hormones are involved,and contribute to alertness and readiness to move. Some signs of arousal are increased heart r [..]

The global, nonselective level of alertness of an individual.

(n) the act of arousing(n) a state of heightened physiological activity(n) awakening from sleep(n) mutual sexual fondling prior to sexual intercourse

Being awake. Primitive state of alertness managed by the reticular activating system (extending from the medullato the thalamus in the core of the brain stem) activating the cortex. Cognition is not p [..]

The state of being awake or reactive to stimuli through one or more of the five senses.

abrupt change from sleep to wakefulness, or from a "deeper" stage of non-REM sleep to a "lighter" stage

Arousal refers to alertness. Arousal is important for starting, completing, or switching tasks.

A state of physiological or psychological excitation.

An individual's general metabolic readiness to perceive and act. Increased arousal is associated with increased heart rate, increased body temperature, increased rate of breathing, increased oxygen consumption, increased glucose uptake, faster reaction times, and many other physiological changes. Different levels of arousal are most evident in [..]

Cortical vigilance or readiness of tone, presumed to be in response to sensory stimulation via the reticular activating system.

Cortical vigilance or readiness of tone, presumed to be in response to sensory stimulation via the reticular activating system.

A state of readiness for behaving, metaphorically extended from arousal in the colloquial sense of awakening.

The state of being alert and ready to respond, or waking from sleep.

or gating system

Sexual excitment