PSYC 1001 Lecture Notes - Lecture 4: David H. Hubel, Trichromacy, Presbyopia
16 Nov 2016
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Document Summary
Absolute threshold (130): a threshold for a specific type of sensory input is the minimum amount of stimulation that an organism can detect. They define the boundaries of an organisms sensory capabilities. Difference between not perceiving and just being able to perceive a stimulus. We can detect a candle flame 50 km away. Additive colour mixing (143): works by superimposing lights, putting more light in the mixture than exists in any one light itself. Afterimage (144): a visual image that persists after a stimulus is removed. Basilar membrane (158): runs the length of the spiraled cochlea and holds the auditory receptors. The hair cells found on the basilar membrane are to convert physical sound stimulation into neural impulses. Binocular depth cues (152): are clues about distance based on the differing views of the two eyes. Information from each eye crosses at optical chiasm. Bottom-up processing (147): a progression from individual elements to the whole.
