1. the part of the brain that receives and coordinates all the stimuli conveyed to various sensory centers.
2. the entire sensory system of the body.

1. all the sensory apparatus of an organism
2. the central part of a nervous system that receives and coordinates all stimuli

1. the seat of sensation; the nervous center or centers to which impressions from the external world must be conveyed before they can be perceived; the place where external impressions are localized, and transformed into sensations, prior to being reflected to other parts of the organism; hence, the whole nervous system, when animated, so far as it is susceptible of common or special sensations.

1. A supposed point in or part of the brain where sensation resides or becomes manifest; the so-called “seat of the soul”; hence, the undetermined part of the nervous system in which molecular activity of certain kinds and certain grades of intensity immediately causes sensation; loosely, the brain, or the brain and spinal cord; especially, the gray matter of these organs, or any nervous ganglion regarded as a center of sensation. also sensory, sensitory.
2. in biology, the whole sensory apparatus of the body, or physical mechanism of sensation, including the skin and entire nervous system as well as the special sense-organs; all the parts, organs, and tissues of the body which are capable of receiving or transmitting impressions from without.

1. the areas of the brain that process and register incoming sensory information and make possible the conscious awareness of the world