Review Guide second test

Review Guide second test - EXAM #2 PSYCHOLOGY 101 SPRING...

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EXAM #2 – PSYCHOLOGY 101 – SPRING 2009 – REVIEW SHEET Hi, the exam will be 60 multiple choice items. The exam will be on the chapters below (and material covered in class as it relates to that material): Chapter four – Sensation and Perception 1. What are the physical and psychological characteristics of sound and light (e.g., amplitude corresponds to loudness; wave length frequency corresponds to what types of colors?) and what is used to measure them (e.g., hertz)? light- electromagnetic radiation that travels as a wave amplitude- height of the light wave - affects the perception of brightness wavelength- distance between the peaks - affects the perception of color Purity- how varied the mix of wavelengths is The visible spectrum is only a small portion of the total range of wavelengths Sound waves- vibrations of molecules that travel through some physical medium such as air. They are generated by vibrating objects. Also characterized by amplitude, wavelength, and purity. These physical properties affect the psychological properties like loudness, pitch, and timbre. 2. Place versus Frequency (volley) theory of hearing; trichromatic versus opponent process theories of color vision; rods vs. cones. Cones- Specialized visual receptors that play a key role in daylight vision and color. They give more precise details and sharpness then rods. Fovea- Tiny spot in the center of the retina that contains only cones. Visual activity is greatest at this spot Rods- Specialized visual receptors that play a key vision in night vision and peripheral vision Trichromatic theory of color vision- Thomas Young and Hermann Von Helmholtz. The theory says that humans have three types of receptors (red, green, and blue) with differing sensitivities to different light wavelengths. Opponent Process Theory- color perception depends on receptors that make antagonistic responses to three pairs of colors. Red vs. Green. Blue vs. Yellow. And Black vs. white. Theory calls for four names of colors. (red, green, blue, and yellow) Complementary colors- colors that when mixed together give a gray tone Afterimage- a visual image that persists after a stimulus is removed Place theory- Hermann Helmholtz. Perception of pitch corresponds to the vibration of different portions, or places along the basilar membrane. Assume that hair cells at various locations respond independently and that different sets of hair cells are vibrated by different sound frequencies Frequency theory- Perception of pitch corresponds to the rate, or frequency, at which the entire basilar membrane vibrates. The whole membrane vibrates in response to sounds Current theory- pitch perception depends both on place and frequency coding of vibrations along the basilar membrane. 3.
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Review Guide second test - EXAM #2 PSYCHOLOGY 101 SPRING...

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