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Related Concept Videos

Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

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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....
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Auditory Pathway01:15

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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.
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Association Areas of the Cortex01:21

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Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
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Somatosensory, Motor, and Association Cortex01:23

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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...
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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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Visual System01:26

Visual System

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Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
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Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder
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Auditory-visual integration in fields of the auditory cortex.

Michinori Kubota1, Shunji Sugimoto2, Yutaka Hosokawa3

  • 1Department of Neuroinformatics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan.

Hearing Research
|January 25, 2017
PubMed
Summary
This summary is machine-generated.

Multimodal sensory interactions in the auditory cortex show distinct visual response properties. Visual stimuli primarily inhibit caudal belt fields (P and DCB), enhancing auditory response differences.

Keywords:
Belt fieldsCore fieldsInhibitionMultimodal interactionsOptical imagingVoltage-sensitive dye

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Area of Science:

  • Neuroscience
  • Auditory Cortex Research
  • Sensory Integration

Background:

  • Multimodal interactions are known in early sensory cortices.
  • Their response properties and spatiotemporal organization remain poorly understood.

Purpose of the Study:

  • To investigate neuronal responses to visual stimuli in the auditory cortex.
  • To elucidate characteristics of multimodal sensory interactions in the cerebral cortex.

Main Methods:

  • Real-time optical imaging with voltage-sensitive dye in guinea pig auditory cortex.
  • Neuronal responses to visual stimuli alone and combined with auditory stimuli were recorded.

Main Results:

  • Visual responses in auditory cortex fields showed regional and temporal differences.
  • Posterior (P) and dorsocaudal belt (DCB) fields exhibited the most salient visual responses, mainly inhibitory.
  • Visual input enhanced differences in auditory responses among fields, particularly in P and DCB fields.

Conclusions:

  • Visual influences are most prominent in P and DCB fields of the auditory cortex.
  • These visual influences manifest primarily as inhibition.
  • Visual input modulates and enhances the differentiation of auditory responses across cortical fields.