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Related Concept Videos

Auditory Pathway01:15

Auditory Pathway

6.8K
Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
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Hearing01:31

Hearing

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When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
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Vision01:24

Vision

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Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
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The Cochlea01:13

The Cochlea

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The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
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Major Somatic Sensory Pathways01:28

Major Somatic Sensory Pathways

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Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
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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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Updated: Dec 21, 2025

Modification of a Colliculo-thalamocortical Mouse Brain Slice, Incorporating 3-D printing of Chamber Components and Multi-scale Optical Imaging
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Experience Creates the Multisensory Transform in the Superior Colliculus.

Zhengyang Wang1, Liping Yu2, Jinghong Xu2

  • 1Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, China.

Frontiers in Integrative Neuroscience
|May 20, 2020
PubMed
Summary
This summary is machine-generated.

Multisensory experience shapes how the brain integrates sight and sound. Without this experience, the brain

Keywords:
coactivationcross-modaldark-rearingdevelopmentenhancementtiming

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Area of Science:

  • Neuroscience
  • Sensory Processing
  • Developmental Neuroscience

Background:

  • Multisensory integration, the brain's ability to combine information from different senses, is crucial for perception and behavior.
  • Deficits in multisensory integration are observed in some individuals and can be mimicked by depriving animals of sensory experience.
  • The superior colliculus (SC) in cats serves as a model for studying experience-dependent development of visual-auditory integration.

Purpose of the Study:

  • To investigate the neural mechanisms underlying impaired multisensory integration in animals deprived of early sensory experience.
  • To determine if early experience alters the 'multisensory transform' or the dynamics of unisensory inputs.
  • To elucidate how multisensory experience shapes neural computations for integrating cross-modal information.

Main Methods:

  • Recorded neural responses of SC neurons in dark-reared ('naïve') and normally-reared ('neurotypic') cats.
  • Analyzed neural activity on a millisecond-by-millisecond basis during visual-auditory stimulation.
  • Compared the computational operations of unisensory-to-multisensory signal conversion between naïve and neurotypic groups.

Main Results:

  • Normally-reared cats showed non-linear amplification of multisensory responses, indicating effective integration.
  • Dark-reared cats exhibited no initial integration and later competitive interactions, rather than amplification.
  • Experience critically impacts the 'multisensory transform' itself, not just the timing of sensory inputs.

Conclusions:

  • Multisensory experience fundamentally alters the neural computation for integrating cross-modal sensory information.
  • This experience-dependent computation enables cooperative processing of unisensory inputs to enhance salient cross-modal events.
  • Proper multisensory integration, shaped by experience, is essential for normal perception and adaptive behaviors.