Chapter 3 Notes
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This 2 page Class Notes was uploaded by Haley Hogan on Monday October 5, 2015. The Class Notes belongs to PSY 200 at Eastern Kentucky University taught by Jared Dillow in Summer 2015. Since its upload, it has received 25 views.
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Date Created: 10/05/15
sycholo 200 Chapter 3 Sensory and Perception Perception Sensation and 60 De nitions 0 Sensation reacting to external stimulus energies o Perception interpreting sensations o Transduction electromagnetic energy transforming to neural information o Sensory stimulation 0 Absolute Threshold minimum amount of stimulus energy detectable o Weber s Law two stimuli must have a percentage difference to be perceived different 0 Subliminal Messaging subtle stimuli detection lower than conscious awareness ght club video 0 Signal Detection Theory decision s made quotonthespotquot due to uncertain stimuli 60 Vision 0 Light re ects off of objects into the pupil to the retina sending neural impulses through the optic nerve to the optic chiasm to the visual cortex of the brain 0 Light wavelengths hue intensity brightness and purity saturation or redness 0 Parts of the eye pupil retina iris optic nerve I Pupil relaxes and contracts controlling the amount of light that enters the eye I Retina back of the eye containing photoreceptors rods and cones trichromatic I Rods Reacts to light and are responsible for night vision and peripheral vision I Cones concentrated in the FOVEA and are responsible for color and detail I Optic Nerve sends and receives visual information to the optical chiasm for processing 0 Dark Adaptation when eyes adjust to dark or poorly lit places allows rods and cones to rejuvenate o The Trichromatic Theory 3 types of cones that measure short medium and long wavelengths The cones represent the 3 primary colors perceived red blue and green 0 Color Blindness when a type of cone is absent or damaged more common amongst males Types Monochromacy RareBlack and White Dichromacy Common Green cones affected 0 Retinal Disparity each eye sees slightly different perspectives 0 Sound begins with re ecting vibrations off of objects Frequency high or low Intensity and timbre o Auditory Pathway Parts Outer Ear Middle Ear and Inner Ear Outer Ear Tunnels vibrations parts Pinna Tympanic Membrane Eardrum and Auditory Canal Middle Ear Funnels sound to the inner ear parts Hammer Anvil and Stirrup Inner Ear Turns sound into neural impulses parts Cochlea Cilia and Basliar Membrane o The pinna collects the sound vibrations and sends them down the auditory canal through the eardrum Next the vibrations are sent through the hammer anvil and stirrup where they are funneled to the cochlea causing it to vibrate triggering the cilia on the Basliar membrane thus sending neural vibrations down the auditory nerve to the temporal lobe of the brain 0 Place Theory where cells respond 0 Frequency Theory pitch perception by the rate that neuro cells are ring 00 Skin and Body 0 Touch Temperature and Pain 0 Somatosensory Cortex Parietal lobe responsible for touch 0 Pain the adapted reaction in response to tissue being damaged 0 Gate Control Theory neural impulses from pain receptors are blocked when appropriate o Kinesthe cy g sggmg98rremtabls u ee938r r9eqiga r pnl9 dded in joints and muscles 0 Vesticular Sense balance and movement 00 Smell and Taste 0 Smell is processed in the Olfactory Bulb 0 Pheromones cause reactions when detected by fellow member of the same species Dirty Tshirt Experiment Men wore a tshirt for a week without washing it then women smelled the tshirts and chose the one they liked best 0 Taste is detected with taste buds that sense bitter sweet and salty
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