Sensation Perception
Sensation Perception - Related Videos
11:32
Perspectives on Sensation and Perception
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University The study of sensation—how signals are transduced from sensory organs, like the eyes—and perception—how the brain interprets these messages—has a rich history dating back to the 19th century, when great strides were made in understanding the properties of light and how they relate to the visual system. Importantly, such sensory and perceptual processes determine what we see, feel, taste, and hear in our surroundings. However, many...
07:54
Design, Fabrication, and Administration of the Hand Active Sensation Test (HASTe)
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Cited by 1 •
2015
The Hand Active Sensation Test (HASTe) is a valid and reliable measure of haptic performance, which has been used successfully to identify impaired haptic touch in individuals with stroke. The purpose of this paper is to describe the design, fabrication and administration of the HASTe.
08:39
Operant Sensation Seeking in the Mouse
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Cited by 27 •
2010
In this protocol we describe a method of operant learning using sensory stimuli as a reinforcer in the mouse. It requires no prior training or food restriction, and it allows the study of motivated behavior without the use of a pharmacological or natural reinforcer such as food.
01:21
Sensation
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2024
Sensory receptors are specialized neurons that respond to specific types of external stimuli, initiating the process known as sensation. This occurs when sensory input, such as light entering the eye, is detected by these receptors, causing chemical changes in the cells of the retina. These cells then convert the sensory stimulus into action potentials that are transmitted to the central nervous system, a process termed transduction. Absolute thresholds can quantify the sensitivity of sensory...
01:15
Subliminal Perception
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2024
Subliminal perception refers to the processing of sensory information that occurs below the level of conscious awareness. Researchers study subliminal perception by presenting a stimulus, such as a word or image, very quickly, typically around 50 milliseconds. This rapid presentation is often followed by another stimulus, such as a pattern of dots or lines, which blocks further mental processing of the initial stimulus. As a result, if participants cannot identify the initial stimulus better...
FAQs
The critical transition occurs at sensory receptors, where physical energy such as light, sound, pressure, or chemicals is converted into neural signals. This conversion gives the nervous system information that can be processed further, but it does not by itself determine what a person experiences. Meaning depends on later organization and interpretation by the brain.
Attention, prior experience, and context influence which aspects of incoming information receive emphasis and how that information is interpreted. Consequently, perception is not determined solely by the physical stimulus. The same environmental input can acquire different significance as an individual’s focus, learned history, or surrounding circumstances change, helping explain variation in recognition and behavior.
The distinction connects different stages of information processing. Sensory receptors provide neural signals from physical stimulation, while the brain organizes and interprets those signals through attention, experience, and context. Examining both stages helps psychologists relate environmental input to recognition, cognition, and behavior rather than treating a person’s response as a direct copy of the stimulus.
These processes help people identify objects and use environmental information to navigate their surroundings. Sensory signals provide the available input, while perceptual organization and interpretation give that input practical meaning. This relationship is relevant to everyday behavior because successful recognition and navigation depend on connecting detected information with an understanding of the surrounding environment.
Research in sensation and perception informs human-computer interaction by examining how people detect and interpret information presented through an interface. Understanding the relationship between sensory signals, attention, and contextual interpretation can help explain how users recognize interface elements and respond to them. The topic therefore connects psychological processing with the design of systems people interact with.
Studying sensation and perception helps researchers examine how biological and environmental factors shape behavior and how sensory disorders may affect that relationship. The framework links changes in detecting information with differences in organizing, interpreting, recognizing, communicating, or responding to potential threats. It also connects sensory processing to broader psychological topics, including attention and cognition.