Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Contralateral white noise selectively changes left human auditory cortex activity in a lexical decision task.

Nicole Behne1, Beate Wendt, Henning Scheich

  • 1Leibniz Institute for Neurobiology, Magdeburg, Germany. nbehne@ifn-magdeburg.de

Journal of Neurophysiology
|January 27, 2006
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Effect of age on lateralized auditory processing.

Hearing research·2023
Same author

Dorsal posterior cingulate cortex responds to negative feedback information supporting learning and relearning of response policies.

Cerebral cortex (New York, N.Y. : 1991)·2022
Same author

Neural Mechanisms Underlying the Effects of Novel Sounds on Task Performance in Children With and Without ADHD.

Frontiers in human neuroscience·2022
Same author

Visual snake aversion in Octodon degus and C57BL/6 mice.

Animal cognition·2021
Same author

Imaging of Functional Brain Circuits during Acquisition and Memory Retrieval in an Aversive Feedback Learning Task: Single Photon Emission Computed Tomography of Regional Cerebral Blood Flow in Freely Behaving Rats.

Brain sciences·2021
Same author

Effect of Contralateral Noise on Speech Intelligibility.

Neuroscience·2021

This study reveals that presenting noise to one ear enhances brain activity in the specialized auditory cortex (AC) for specific tasks. This method confirms left AC specialization for word processing, supporting hemispheric specialization in auditory perception.

Area of Science:

  • Neuroscience
  • Auditory Neuroscience
  • Cognitive Neuroscience

Background:

  • Hemispheric specialization in the auditory cortex (AC) is crucial for processing complex auditory information.
  • Previous research indicated right AC dominance for frequency modulation tasks using contralateral noise.
  • The current study investigates hemispheric specialization for language processing in the AC.

Purpose of the Study:

  • To test the hypothesis that contralateral noise enhances task-specific activation in the specialized auditory cortex.
  • To determine the role of the left AC in lexical decision tasks.
  • To validate a general strategy for assessing hemispheric specialization in the AC.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used to measure brain activity.

Related Experiment Videos

  • Subjects performed a lexical decision task (distinguishing words from pseudowords).
  • Stimuli were presented monaurally to either the left or right ear, with or without white noise to the contralateral ear.

    • Main Results:

    • Without noise, contralateral auditory stimulation showed stronger activation in both ACs.
    • Contralateral noise did not significantly alter right AC activation.
    • Contralateral noise significantly increased left AC activation during the lexical decision task compared to no-noise conditions.

    Conclusions:

    • The findings support left AC specialization for lexical decision tasks.
    • Contralateral noise effectively upregulates activation in the task-specialized hemisphere.
    • This contralateral masking technique is a viable strategy for investigating hemispheric specialization in the auditory cortex.