AP (Advanced Placement) Psychology Sensation & Perception-Sensory Adaptations Revision (Page 1 of 2)

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Loudness, Pitch and Timbre

Humans are sensitive to loudness and pitch in sound.

Loudness of a sound is determined by the amplitude or physical intensity of a sound wave.

The pitch in sound is determined by frequency, the pace of vibration or sound waves

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Theories of Vision

  • Ewald Hering gave a theory for color vision known as opponent-color or opponent-process which states that in the eye, there are two types of color-sensitive cells, one which give response to blue-yellow color and others responding to red-green. When one
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Parts of the Ear There are three major parts of the ear:

  • Outer ear sends sounds to the middle ear through parts like pinna and the auditory canal.
  • Middle era starts with the tympanic membrane (also known as the ear-drum) which is seen all through the auditory canal, followed by the ossicles
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Olfaction

Smell is also one of the sense of five senses, which is conducted through the hair receptors in the nostrils which send their messages to the olfactory bulb lying in the brain. The perception we have regarding smell is much

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Cutaneous or Tactual

Human skin senses touch, pain, cold, and warmth.

  • Free nerve endings in the skin are responsible for knowing the feel of pain and temperature changes.
  • Meissner’s corpuscles detect touch or contact.
  • Pacinian corpuscles give response when the skin is displaced.
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