what is arousal
Put simply, 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.esson Summary. To sum things up, arousal is the state of being alert, awake and attentive. It's mainly controlled by the RAS in the brain. It can influence our behavior by preparing us to respond to different things in the environment.