AP (Advanced Placement) Psychology Sensation & Perception-Thresholds Revision (Page 1 of 1)

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Classic illusions

  • Ambiguous figures means your vision for two different things as is perceived in your mind.
  • Figure-ground reversal patterns are ambiguous figures, such as the Rubin vase. WHat you see as the important part of the figure and what you refer
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Psychophysical explanation for perception of intensity

Weber’s law applies to all senses but only to a limited range of intensities. To be a stimulus to be noticeable, it should be increased in a constant proportion so that it is recognized. This formula is shown as:

K

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Types of thresholds

Threshold addresses minimum levels of stimulation that are needed for detection. Important types of threshold are as follows:

  • Absolute threshold is the lowest frequency of stimulus which is observed only 50 % of the times.
  • Differential threshold (also known as
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