(Sanskrit: “withdrawal of the senses”), in the Yoga system of Indian philosophy, fifth of the eight stages intended to lead the aspirant to samādhi (samadhi), the state of perfect concentration. The goal of pratyāhāra is to arrest the reaction of the senses to external objects, thus helping to isolate and free the mind from the involuntary intrusions caused by sensory activity. The mind does not cease to experience external phenomena but merely experiences them directly through its own intensified powers of concentration instead of through the mediation of the senses.