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Related Concept Videos

Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex.
Auditory Pathway01:15

Auditory Pathway

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 the...
Auditory Perception01:17

Auditory Perception

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 cochlea, a...
Vision01:24

Vision

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.
Sensory Modalities01:15

Sensory Modalities

Sensation typically is the process by which the sensory receptors and sense organs detect stimuli from the internal and external environment and transmit this information to the central nervous system for processing.
General senses refer to the broad category of sensory information detected by receptors in the body and can be further grouped into somatic and visceral senses. Somatic sensations include touch, pressure, temperature, and pain and are essential for navigating our environment and...
Somatosensory, Motor, and Association Cortex01:23

Somatosensory, Motor, and Association Cortex

The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at the...

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Related Experiment Video

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Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder
09:13

Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder

Published on: April 22, 2015

Multisensory integration: vision boosts information through suppression in auditory cortex.

Asif A Ghazanfar1, Luis Lemus

  • 1Neuroscience Institute, Department of Psychology, Princeton University, Princeton, NJ 08540, USA. asifg@princeton.edu

Current Biology : CB
|February 16, 2010
PubMed
Summary
This summary is machine-generated.

Vision can surprisingly enhance information in the auditory cortex, challenging previous understandings of sensory processing. This cross-modal influence impacts neural coding in unexpected ways.

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Area of Science:

  • Neuroscience
  • Sensory processing
  • Auditory cortex

Background:

  • Investigates cross-modal interactions within the neocortex.
  • Examines how non-primary sensory signals affect unimodal areas.
  • Addresses the functional relevance of extra-modal influences on neural coding.

Discussion:

  • Vision's effect on auditory cortex information content is counter-intuitive.
  • Challenges the traditional view of strictly unimodal sensory processing.
  • Highlights complex interdependencies between sensory modalities.

Key Insights:

  • Extra-modal visual signals enhance neural information in the auditory cortex.
  • This enhancement occurs in a manner not previously anticipated.
  • Suggests sophisticated integration of sensory information in the brain.

Outlook:

  • Further research into the mechanisms of cross-modal enhancement.
  • Exploring implications for auditory perception and disorders.
  • Investigating the broader principles of neural coding across senses.