PSL201Y1 Lecture Notes - Aqueous Humour, Rhodopsin, Membranous Labyrinth
Document Summary
Perception: the conscious interpretation of the world based on the sensory systems, memory, and other neural processes. The afferent division of the pns transmits information from the periphery to the cns. The information is detected by sensory receptors (detect stimuli in the external environment). Visceral receptors (detect stimuli within the body) transmit information to the cns by visceral afferent neurons. The somatosensory system is necessary for perception of sensations associated with receptors in the skin (somesthetic sensations) and for proprioception (the perception of the position of the limbs and the body). The proprioception depends on specific proprioceptors in muscles and joints and on more generalized receptors in the skin. Special senses are necessary for senses of vision, hearing, balance/equilibrium, taste, and small. Sensory receptors: specialized neuronal structures that detect a specific form of energy in the internal or external environment. Modality: the energy form of a stimulus (i. e. light waves, sound waves, pressure, etc.
