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Related Concept Videos

Factors Affecting Perception01:25

Factors Affecting Perception

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Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
An illustrative example of a perceptual set is the scenario where an airline pilot told...
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Somatosensation01:33

Somatosensation

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The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
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Tactile and Chemical Senses01:27

Tactile and Chemical Senses

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Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex.
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Sensation01:21

Sensation

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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.
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Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

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The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
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Perception01:28

Perception

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Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
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Related Experiment Video

Updated: Dec 29, 2025

Tactile Semiautomatic Passive-Finger Angle Stimulator TSPAS
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Tactile Semiautomatic Passive-Finger Angle Stimulator TSPAS

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Designing Tactile Cues: Factors Affecting Perceived Salience and Recognition.

Bruce J P Mortimer, Linda R Elliott, Louis C Miller

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    Tactile cue characteristics significantly impact operator learning and recall. Static, repetitive tactile patterns (tactions) are easier to remember, especially with strong working memory.

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    Area of Science:

    • Human-Computer Interaction
    • Cognitive Psychology
    • Haptics

    Background:

    • Operator performance is crucial in complex systems.
    • Effective tactile cue design can enhance human-machine interaction.
    • Understanding how tactile cue characteristics influence cognition is vital.

    Purpose of the Study:

    • To investigate the impact of tactile cue (taction) characteristics on operator perception, learning, and memory.
    • To compare recall performance under stationary conditions versus attention-demanding tasks.
    • To explore the relationship between working memory, spatial ability, and tactile cue recall.

    Main Methods:

    • Two experiments were conducted using twelve multitactor cues (tactions).
    • Taction signal characteristics (complexity) and activation sequencing (pattern location type) were manipulated.
    • Operator perception, learning, recall, working memory, and spatial ability were assessed.

    Main Results:

    • Significant differences in taction perception and recall were observed based on complexity and pattern type.
    • Tactions with static, locational, repetitive patterns were learned and recalled more effectively.
    • Higher visual and auditory working memory capacity correlated significantly with improved tactile cue recall accuracy.

    Conclusions:

    • Tactile cue design, specifically complexity and pattern type, significantly influences operator learning and recall.
    • Static, repetitive tactile patterns offer superior memorability.
    • Individual working memory capabilities play a key role in the accurate recall of tactile information.