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Related Concept Videos

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...
Hearing01:31

Hearing

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.
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.

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Related Experiment Video

Updated: May 8, 2026

Stimulus-specific Cortical Visual Evoked Potential Morphological Patterns
09:42

Stimulus-specific Cortical Visual Evoked Potential Morphological Patterns

Published on: May 12, 2019

Auditory click stimuli evoke event-related potentials in the visual cortex.

Susan Pockett1, Suzanne C Purdy, Barry J Brennan

  • 1aDiscipline of Speech Science, School of Psychology bDepartment of Physics, University of Auckland, Auckland, New Zealand cDepartment of Neurology, University of Washington, Seattle, Washington, USA.

Neuroreport
|August 14, 2013
PubMed
Summary
This summary is machine-generated.

Auditory stimuli can activate the visual cortex (VC), evoking event-related potentials (ERPs). This research reveals bidirectional communication within the audio-visual network, impacting perception.

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Area of Science:

  • Neuroscience
  • Auditory and Visual Processing

Background:

  • Previous research suggests visual stimuli influence the auditory cortex.
  • The impact of auditory stimuli on the visual cortex remains less understood.

Purpose of the Study:

  • To investigate if unimodal auditory stimuli can evoke event-related potentials (ERPs) in the visual cortex (VC).
  • To explore functional connectivity within the human audio-visual network.

Main Methods:

  • Measured electroencephalographic (EEG) and intracranial electroencephalographic (iEEG) recordings in response to auditory click stimuli.
  • Analyzed topographical distribution and amplitude of ERPs in both auditory cortex (AC) and VC.

Main Results:

  • Unimodal auditory stimuli evoked ERPs in both the AC and VC across all participants.
  • Intracranial recordings confirmed the origin of auditory-evoked ERPs within V1 and other VC regions.
  • ERPs in the VC were not simply volume-conducted signals from the AC.

Conclusions:

  • Unimodal auditory stimuli demonstrably evoke ERPs in the visual cortex.
  • This provides evidence for bidirectional functional connectivity in the audio-visual network.
  • Auditory input influences visual perception, complementing known visual effects on hearing.