Humans have five principal senses of perception. These comprise touch, hear, taste, smell and sight. Senses have been perceived with the aid of sensory organs and sensory system associated with each sense. That is, people hear through the ears, appreciate tactile sensation with the help of skin, smell through nose, see through eyes and taste with the tongue. Taste and smell are known as the chemical senses. Humans can differentiate between hundreds of smells and different types of tastes. Touch is a somatic sensation where the pressure variations are detected by the skin. Other senses include equilibrioception, nociception, thermoception and proprioception.
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