A sense is a biological system used by an organism for sensation, the process of gathering information about the world through the detection of stimuli. Although ...
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in some cultures five human senses were traditionally identified as such (namely sight, smell, touch, taste, and hearing), it is now recognized that there are many more. Senses used by non-human organisms are even greater in variety and number. During sensation, sense organs collect various stimuli (such as a sound or smell) for transduction, meaning transformation into a form that can be understood by the brain. Sensation and perception are fundamental to nearly every aspect of an organismĀ“s cognition, behavior and thought.