A patient is in the late stages of AIDS, which is now affect-ing his brain as well other major organ systems. The patient confides to the nurse that he feels terribly alone because mostof his friends are afraid to visit. The nurse determines thatthe least likely underlying etiology for his sensory problemswould be:a. Stimulationb. Receptionc. Transmission–perception–reactiond. Emotional responses

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Learning and memory

Learning is defined as a relatively permanent and irreversible adaptive change in behavior. It always results from experience. The ability of an organism to store and recall the effects, sensations, and knowledge gained through learning and experience is called memory.