PS102 Chapter Notes - Chapter 5: Sound, Visual System, Retina
Document Summary
Sensation: the process through which the senses detect visual, auditory, and other sensory stimuli and transmit them to the brain. Perception: the process by which sensory information is actively organized and interpreted by the brain. Processing sensory information: bottom-up processing: perception that proceeds by transducing environmental stimuli into neural impulses that move successively into more complex brain regions (info from environment processed by brain) When boiling water, see steam = water is hot; do not need to touch water to check if it is hot visual to brain. See best friend"s face -> brain regions that store info about familiar images help perceive/recognize friend. Pressure or damage to the skin (touch, heat, pain) Sensory receptor cells: specialized cells that convert a specific form of environmental stimuli into neural impulses. Sensory transduction: the process of converting a specific form of sensory data into a neural impulse that our brain can read: only occurs when stimuli reaches threshold level.
