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Experimental psychology refers to work done by those who apply experimental methods to psychological study and the underlying processes. Experimental psychologists employ human participants and animal subjects to study a great many topics, including (among others) sensation, perception, memory, cognition, learning, motivation, emotion; developmental processes, social psychology, and the neural ...
Psychophysics quantitatively investigates the relationship between physical stimuli and the sensations and perceptions they produce. Psychophysics has been described as "the scientific study of the relation between stimulus and sensation" [1] or, more completely, as "the analysis of perceptual processes by studying the effect on a subject's experience or behaviour of systematically varying the ...
Stratton continued his experiments on perception, branching into studies on pseudoscopic vision, stereoscopic acuity, eye movements, symmetry and visual illusions, how people perceive depth seeing surroundings either one-eyed or two-eyed, acuity and limits of peripheral vision, apparent motion, afterimages impressed on the eye when a person ...
While sensation occurs at the physical nerves, there can be reasons why it is not consistent. Age [8] or nerve damage can affect sensation. Similarly, psychological factors can affect perception of physical sensation. Mental state, memory, [9] mental illness, [10] fatigue, and other factors can alter perception.
A landmark 1942 experiment by Hecht, Shlaer, and Pirenne assessed the absolute threshold for vision. They tried to measure the minimum number of photons the human eye can detect 60% of the time, using the following controls: [4] [5] [6]
Critics of the power law also point out that the validity of the law is contingent on the measurement of perceived stimulus intensity that is employed in the relevant experiments. ( Luce 2002 ), under the condition that respondents' numerical distortion function and the psychophysical functions could be separated, formulated a behavioral ...
Scientists who study perception and sensation have long understood the human senses as adaptations. [83] Depth perception consists of processing over half a dozen visual cues, each of which is based on a regularity of the physical world. [83]
Gustav Theodor Fechner (/ ˈ f ɛ x n ər /; German:; 19 April 1801 – 18 November 1887) [1] was a German physicist, philosopher, and experimental psychologist.A pioneer in experimental psychology and founder of psychophysics (techniques for measuring the mind), he inspired many 20th-century scientists and philosophers.