PSY100H1 Lecture : chap 4 notes

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copperfrog105

7 Feb 2011

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Psy 100 - chap 4 sensation and perception subliminal perception the registration of sensory input without conscious awareness. Perception without awareness can take place sensory adaptation. A gradual decline in sensitivity due to prolonged stimulation. Another factor that influences registration of sensory input. An automatic, built-in process that keeps people tuned into the changes rather than the constants in their sensory input. A form of electromagnetic radiation that travels as a wave, moving, naturally enough, at the speed of light. Purity: influences perception of the saturation, or richness, of colors. Eye retina: neural tissue lining the inside back surface of the eye; it absorbs light, processes images, sends visual info to the brain; the axons run from the retina to the brain converge at the optic disk. Optic disk: a hole in the retina where the optic nerve fibres exit the eye; part of an image cant be seen blind spot .

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6. Which of the following is/are considered to be a stimulus for the perception of movement? A) the absolute movement of the stimulus across the retina B) binocular disparity, in which each eye sees a slightly different image C) the relative movement of an object in relation to its background D) the object's height in the horizontal plane E) Both A) and C).

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Critics of the trichromatic theory of colour vision have indicated that this theory has a major limitation. Which of the following statements MOST accurately reflects this limitation? A) Young and von Helmholtz were incorrect in assuming that cone photoreceptors in our retina are maximally responsive to a specific wavelength of light B) The trichromatic theory cannot explain the phenomenon of visual after-effects C) Rod photoreceptors in our retina, not cones, are responsible for the neural coding of colour D) Research has determined that there are actually six types of cones in the retina, rather than three as proposed by Young and Helmholtz E) Trichromatic theory cannot explain sensory adaptation

Which of the following is NOT true? A) To fully taste something, one needs the sense of smell B) Because there are taste buds on the roof and back of the mouth, a person without a tongue could still experience taste C) The centre of the tongue is a relatively insensitive area with respect to taste D) The perception of taste results from the stimulation of a particular area on the tongue E) A taste bud consists of more than one receptor cell

PSY100H1 Lecture : chap 4 notes

PSY100H1 Full Course Notes

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