SIW - Sensory Reception Lesson

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Sensory Reception

Our senses are constantly at work making us aware of external stimuli, such as light or sound, while also monitoring information about our internal environment. Senses provide information about the body and its environment. Traditionally, humans have five senses: somatosensation (touch), gustation (taste), olfaction (smell), sight, and hearing. In this module, we will also study the sense of balance. Although the sensory systems associated with these senses are very different, they all share a common function, which is the translation of sensory signals to electrochemical signals in the nervous system. This process is called sensory transduction.

Perception

Perception is an individual's interpretation of a sensation. Although it relies on the activation of sensory receptors, perception occurs at brain level.  The brain distinguishes sensory stimuli through a sensory pathway where action potentials from sensory receptors travel along neurons that are dedicated to a particular stimulus.  

The brain has dedicated areas to the processing of stimuli: the thalamus, the somatosensory processing region, the auditory processing region, and the visual processing region.

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