GEOL 1001 Chapter : 2F13 CH2 Part1
Document Summary
Sensation- process that occurs when special receptors in the sense organs are achieved allowing various forms of outside stimuli to become neural signals in the brain. Perception- brain takes all the sensations people experience allows them to be interpreted. Sensory receptors- form of neurons, cells making up the nervous system. Transduction- processing of converting outside stimuli such as light into neural. Just noticeable difference- minimum difference between 2 stimuli requires for detection of 50 percent of the time (difference threshold) Absolute threshold- lowest level of stimulus that person can consciously detect. 50 percent of the time stimulation present: webber law- increases proportion to the size of the stimuli. Habituation- way of the brain deals with unchanging information from the environment. Subliminal stimuli- strong enough for sensory receptors to pick them up both not strong enough for us to be able to detect them. Saturation- determined how much these is mixture of wavelength (purity)
