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Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
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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...
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Separate neural subsystems support goal-directed speech listening.

Liu-Fang Zhou1, Dan Zhao2, Xuan Cui3

  • 1Philosophy and Social Science Laboratory of Reading and Development in Children and Adolescents (South China Normal University), Ministry of Education, China; Key Lab of BI-AI Collaborated Information Behavior, School of Business and Management, Shanghai International Studies University, Shanghai, 201620, China.

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Humans use two distinct brain systems for focused listening in noisy environments. One system handles speech processing, while the other manages self-referential thought, revealing how we tune into specific speakers.

Keywords:
Dichotic listeningFunctional magnetic resonance imagingGoal-directedSpeech processing

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Auditory Perception

Background:

  • Humans can effectively track speech in noisy environments, a complex cognitive task.
  • This ability relies on the interplay between auditory processing and executive control functions.
  • Previous research suggests specialized brain networks are involved, but their distinct roles remain unclear.

Conclusions:

  • Two anatomically and functionally distinct subsystems support goal-directed speech listening.
  • These subsystems exhibit different dynamic activity properties and functional purposes.
  • One subsystem is associated with language processing, while the other supports self-referential cognition.