PSYC 1004 Lecture Notes - Lecture 5: Subliminal Stimuli, Absolute Threshold, Roygbiv
21 Jan 2018
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Document Summary
Sensation- psychophysics (studies the relationship between physical energy we detect and its effects on our psychological experiences) Buck and axel (how the olfactory system converts molecules) in olfaction. Basic property of protoplasm-irritability receptor specialized for irritability. Transduction (occurs at the receptor) sensory receptor is the transducer- receive, transform, deliver. Adaptation (different colored american flag red white and blue) Audio receptors cochlea in the ear, ex. Auditory receptors can only process up to 22 khz. Absolute threshold- minimum physical energy necessary to activate a given sensory system 50% of the time, affected by deprivation and hormones. Difference threshold- difference between 2 stimuli- required to distinguish one from the other. Difference thresholds- the noticeable difference between two stimuli required for. Sensory adaptation- nerve cells fire less frequently when we are constantly exposed to. Weber"s law- the principle that two stimuli must differ by a constant minimum detection half the time percentage an unchanging stimulus.
