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Related Concept Videos

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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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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Synesthesia is a remarkable condition where stimulation of one sensory or cognitive pathway leads to automatic, involuntary experiences in a second sensory or cognitive pathway. People with synesthesia experience a blending or crossing of their senses, such as sight and sound, leading to cross-modal sensations. In this condition, the stimulation of one sense, such as hearing a number or musical note, triggers an experience of another sense, like sensing a specific color, taste, or smell. People...
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The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
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Surface Stickiness Perception by Auditory, Tactile, and Visual Cues.

Hyungeol Lee1, Eunsil Lee2, Jiye Jung3

  • 1Department of Philosophy, Sogang University, Seoul, South Korea.

Frontiers in Psychology
|October 18, 2019
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Humans perceive surface stickiness differently across senses. Auditory cues offer the best discrimination sensitivity for stickiness intensity compared to touch and vision.

Keywords:
auditory cuessurface stickinesstactile cuestexture perceptionvisual cues

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Area of Science:

  • Psychophysics
  • Sensory Perception
  • Multisensory Integration

Background:

  • Surface stickiness perception is crucial for object interaction.
  • Understanding how different sensory modalities contribute to this perception is key.

Purpose of the Study:

  • To investigate the psychophysical underpinnings of multisensory surface stickiness perception.
  • To determine the sensitivity of human perception to varying stickiness intensities across auditory, tactile, and visual cues.

Main Methods:

  • Participants sorted five sticky stimuli by perceived intensity for each modality.
  • Psychometric curves were used to evaluate discrimination sensitivities.
  • Multidimensional scaling (MDS) analyzed perceptual distances between intensities.

Main Results:

  • Perceptual intensity orders did not consistently match physical intensity orders across modalities.
  • Auditory cues provided superior discrimination sensitivity for stickiness intensity compared to tactile and visual cues.
  • MDS revealed that visual and tactile perceptions of stickiness were similar, while auditory perception differed.

Conclusions:

  • Auditory cues are most effective for discriminating surface stickiness intensity.
  • Auditory processing of texture information is distinct from other sensory modalities.