Reticular Activating System (RAS)

A network of neurons located in the brainstem and thalamus, critical for regulating arousal, sleep-wake transitions, attention, and consciousness.

Key Functions:

• Regulates arousal and wakefulness.
• Controls sleep-wake transitions.
• Filters sensory information, directing attention.
• Essential for maintaining consciousness.

Interacting Systems & Components:

• Reticular Formation (core component of)
• Thalamus (interacts with)
• Cerebral Cortex (influences its activity state)
• Sleep-Wake Cycle (regulates)
• Attention (involved in)