PSY100H1 Chapter Notes - Chapter 12: Lamellar Corpuscle, Postcentral Gyrus, Somatotopic Arrangement
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PSY100H1 Full Course Notes
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Document Summary
Touch: sensations caused by mechanical displacements of skin. Kinesthesis: perception of position and movement of limbs in space. Proprioception: perception mediate by kinesthetic and vestibular receptors. Somatosensation: collective term for sensory signals from body. Pain serves as warning system that tells us when something might be internally wrong or when external stimulus may be dangerous. Temperature sensations enable to seek or create thermally safe environments. Mechanical sensations play important role in intimate sexual and productive activities and provide means of communicating thoughts and emotions. Touch important because use it to identify and manipulate objects that can"t be seen or heard. Eyes and ears an perceive signals from objects that are far from body, but must almost always be in direct contact with object to perceive it by touch. Human sense of touch is housed in largest and heaviest sense organs skin covers ~1. 8 square meters and. Epidermis: outer of 2 major layers of skin.
