PSYA01H3 Chapter Notes - Chapter 4: Gustav Fechner, Sensory Neuron, Action Potential
Document Summary
Switching of perspectives is a perceptual phenomenon that takes place in the brain. Body has specialized processes that allow us to take in the outside world. Sensation: the process of detecting external events by sense organs and turning those into neural signals. Raw information of what we sense is sent to the brain, where perception occurs. Perception: involves attending to, organizing and interpreting stimuli that we sense. Sensation leads to perception when specialized sensory receptors are stiumulated. Receptors spread over surface of the skin, inside of the eye, over the tongue and nasal cavity, within the ear. Transduction: process in which physical or chemical stimulation is converted into a nerve impulse that"s relayed to the brain. Patterns of light hit retina converted to nerve impulses that travel to brain centers. Sensory receptors most responsive upon initial exposure to a stimulus. Sensory adaptation: reduction of activity in sensory receptors with repeated exposure to a stimulus.
