SENSATION AND PERCEPTION
BASIC CONCEPTS OF SENSATION AND PERCEPTION
Question
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Subliminal Perception
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Sensory Adaptation
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Weber’s Law
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Transduction
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Detailed explanation-1: -This phenomenon is known as “subliminal perception.” Such capacity is often assumed to be relatively automatic in nature and rely on stimulus-driven activity in low-level cortical areas.
Detailed explanation-2: -It is also possible for us to get messages that are presented below the threshold for conscious awareness-these are called subliminal messages. A stimulus reaches a physiological threshold when it is strong enough to excite sensory receptors and send nerve impulses to the brain: This is an absolute threshold.
Detailed explanation-3: -When subjects were presented with such images in the fMRI scanner, the fusiform face area responded more strongly to faces and the parahippocampal place area responded more to houses, even though subjects were not aware of the images (Moutoussis and Zeki, 2002). This is an example of unconscious perception.
Detailed explanation-4: -Subliminal perception can be defined as the influence of a series of external stimulus on emotions or actions involuntarily, or in other words, subconsciously.
Detailed explanation-5: -In the absence of awareness, any visual processing that is preserved and measured through indirect measures such as priming, is described as unconscious or subliminal perception.