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Related Experiment Video

Updated: Feb 11, 2026

Advanced Cardiac Rhythm Management by Applying Optogenetic Multi-Site Photostimulation in Murine Hearts
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Association between heart rhythm and cortical sound processing.

Renata S Marcomini1, Ana Claúdia F Frizzo1, Viviane B de Góes1

  • 1Centro de Estudos do Sistema Nervoso Autônomo (CESNA), Departamento de Fonoaudiologia, Faculdade de Filosofia e Ciências, UNESP, Marília, Rua Hygino Muzy Filho, 737, Mirante, SP, 17525-900, Brazil. Tel.: 551434021300; E-mails: rsmarcomini@hotmail.com, anafrizzo@marilia.unesp.br, vivianeborim93@gmail.com, simoneregacone@gmail.com, vitor.valenti@marilia.unesp.br.

Journal of Integrative Neuroscience
|May 2, 2018
PubMed
Summary
This summary is machine-generated.

Resting heart rate variability (HRV) influences auditory processing, specifically the N2 wave amplitude and P2/N2 wave latency in the left ear. This suggests a link between heart rhythm and the brain

Keywords:
Autonomic nervous systemcardiovascular physiologyhearingneurophysiologysoundspeech

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Area of Science:

  • Neuroscience
  • Cardiology
  • Auditory Neuroscience

Background:

  • Cortical auditory evoked potentials (CAEP) assess sound signal processing crucial for human communication.
  • Heart rate variability (HRV) reflects autonomic regulation of the heart.
  • The relationship between resting HRV and CAEP remains underexplored.

Purpose of the Study:

  • To investigate the association between resting heart rate variability (HRV) and cortical auditory evoked potentials (CAEP).
  • To determine how time and frequency domain HRV indices correlate with CAEP components.

Main Methods:

  • Evaluated resting HRV in time and frequency domains over 10 minutes.
  • Administered CAEP examinations using frequency and duration protocols for both ears.
  • Employed linear regression to analyze the relationship between HRV indices and CAEP components.

Main Results:

  • Left ear N2 wave amplitude was significantly influenced by time-domain HRV indices (SDNN, pNN50) during the frequency protocol.
  • Left ear P2 wave latency was significantly influenced by LF, HF, and LF/HF ratio during the duration protocol.
  • Left ear N2 wave latency was significantly influenced by LF, HF, and LF/HF ratio during the duration protocol.

Conclusions:

  • Resting heart rhythm is associated with auditory processing pathways, particularly those involving the right hemisphere.
  • Specific HRV metrics correlate with the amplitude and latency of CAEP components, suggesting a link between cardiac autonomic function and auditory cortex activity.