Exam 2 review guide

Exam 2 review guide - How do different aspects of the...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
How do different aspects of the stimulus result in different perceptions? A. Visual a. Wavelength – perceptions of color b. Amplitude – perception of brightness c. Purity – affects richness, perception of the saturation of colors B. Auditory a. Frequency affects pitch (Amplitude also does), hz b. Amplitude – loudness (dB) c. Purity affects timbre – the difference you perceive in different sounds C. Touch/Pain a. 7 different types of receptors Organs involved with senses A. Nose - has olfactory cilia, short life and replaced, axons synapse directly with cells in olfactory bulb at base of brain. Most olfactory receptors respond to a variety of odors B. Retina – neural tissue in back of the eye that absorbs light, processes images and sends visual information to the brain, all axons run through optic disk (hole in retina – blind spot), pupil -regulates the amount of light passing into the rear chamber of the eye, fovea - tiny spot in center of retina that contains only cones, best for visual acuity. C. Ear -sounds travels through pinna - sound collecting cone towards eardrum –membrane that vibrates in response to middle ear to ossicles – three-state lever system of bones that convert large movements with little force into smaller motions with greater force, they amplify tiny changes in air pressure, hearing takes place in cochlea – fluid-filled tunnel that contains the receptors for hearing D. Tongue-taste buds line the trenches around tiny bumps, taste sweet, sour, bitter and salty, die every 10 days, new cells born at edges of tongue and die towards inside Transduction – ?? Names of sensory receptors Where does information go from the eye to the brain? Where in the brain are the left and right visual fields processed? -Information goes from the optic disk at the back of the retina to the brain. Goes from receptors ( rods -key role in night vision and peripheral vision and cones -specialized visual receptors that play a key role in daylight vision and color vision) and cones to bipolar cells to ganglion cells which in turn send impulses along the optic nerve to the brain Left Visual Field Right visual field -right side of each retina and transmitted to right hemishphere - strikes left side of each retina and is transmitted to left hemisphere What types of stimuli stimulate the sensory receptors in the visual system? auditory system? somatosensory system? gustatory system? vestibular system? A. Visual-feature detectors that respond selectively to specific features of complex stimuli a. Simple cells – respond to lines of correct width, oriented at correct angle and located in the correct position b. Complex cells- any position but care about width and orientation c. Hypercomplex – care mostly about length of line d. Colors
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
d.i. Trichromatic Theory – humans eye has three types of receptors with sensitivities to different light wavelengths d.ii. Opponent Process Theory – depends on receptors that make antagonistic responses to three pairs of colors, red versus green, yellow versus blue,
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/27/2011 for the course PSYC 101 taught by Professor Loeb during the Fall '08 term at UNC.

Page1 / 7

Exam 2 review guide - How do different aspects of the...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online