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Related Concept Videos

Perception of Sound Waves01:01

Perception of Sound Waves

The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same frequency...
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...

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Related Experiment Video

Updated: Jun 24, 2026

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
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Neural Speech Tracking during Selective Attention: A Spatially Realistic Audiovisual Study.

Paz Har-Shai Yahav1, Eshed Rabinovitch1, Adi Korisky1

  • 1The Gonda Center for Multidisciplinary Brain Research, Bar Ilan University, Ramat Gan, 5290002, Israel.

Eneuro
|June 2, 2025
PubMed
Summary

Neural bias to target speech is observed in realistic audiovisual settings, even when talker identity changes. However, this neural bias is not a universal marker of selective attention across all individuals.

Keywords:
EEGTRFselective attentionspatialspeech processing

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Area of Science:

  • Neuroscience
  • Auditory Perception
  • Cognitive Psychology

Background:

  • Selective attention to speech is crucial in multitalker environments.
  • Neural tracking of speech is a common measure, often showing a bias towards target speech.
  • Previous studies used controlled acoustic environments, limiting real-world applicability.

Purpose of the Study:

  • To investigate neural bias towards target speech in a spatially realistic audiovisual setting.
  • To examine how switching target talker identity affects neural bias.
  • To assess the correlation between neural tracking, neural bias, and behavioral performance.

Main Methods:

  • Utilized electroencephalography (EEG) to measure neural speech tracking.
  • Employed a spatially realistic audiovisual paradigm with concurrent speech.
  • Manipulated target talker identity and assessed neural and behavioral responses.

Main Results:

  • Group analysis revealed a robust neural bias towards the target talker, persisting after talker identity switches.
  • Individual participant data showed significant variability; over 50% exhibited similar neural tracking of both target and non-target speech.
  • Neural speech tracking did not consistently correlate with neural bias or behavioral performance.

Conclusions:

  • Neural bias towards target speech is observable in ecologically relevant audiovisual settings.
  • Neural bias is not a ubiquitous or necessary indicator of selective auditory attention.
  • Individual differences in speech prioritization strategies may explain the observed variability in neural responses.