Sensory Systems

Sensory systems are responsible for detecting changes in an organism's environment. There are three general classes of sensory systems: those concerned with the external environment (exteroceptive), those concerned with the inner environment (interoceptive), and those that monitor the positions of the body (propriocep-tive). There are several different sensory systems localized in the cerebral cortex, including the somatosensory, visual, auditory, vestibular, taste, and olfactory systems. Within each of these systems there is a hierarchical organization for information processing such that input from sensory receptors in the periphery is relayed through the thalamus, first to the primary sensory cortex, then the secondary sensory cortex, and finally to the cortical association areas. The primary sensory cortices are involved in detecting, localizing, and discriminating the different properties of a stimulus, be it tactile, visual, auditory, etc. The secondary sensory cortices receive this information and integrate it with previous memories of the stimulus to help identify it. The sensory association areas, in turn, receive and integrate information from different sensory modalities to provide conscious perception of the stimulus and initiate plans for behavioral action in response to it.

Do Not Panic

Do Not Panic

This guide Don't Panic has tips and additional information on what you should do when you are experiencing an anxiety or panic attack. With so much going on in the world today with taking care of your family, working full time, dealing with office politics and other things, you could experience a serious meltdown. All of these things could at one point cause you to stress out and snap.

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