04 Sensation and Perception

Sensation and Perception Unit


  • Gustav Fechner

    • Fetchner's Law: for most sensory systems, the straight-line relationship between changes in sensation intensify, measured by the just noticeable difference and changes in stimulus intensity divided by the magnitude of the already-present stimulus


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  • David Hubel

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  • Ernst Weber

    • Discoveries on touch led him to his idea of the Just-Noticeable Difference between two similar stimuli
    • Came up with Weber's Law: the principle of constant ratio

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  • Torsten Weisel

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