Heart Rate Variability and Autonomic Control

The paper quantifies how cardiac sympathetic and parasympathetic activities couple with brain connectivity during self and social touch, revealing distinct patterns in frontoparietal networks and frequency bands.

This study validates Garmin's stress score against HRV metrics from ECG recordings, finding significant correlations and differences between stress and rest conditions.

This study validates surrogate procedures for controlling heartbeat-independent confounding in HEP analysis using simulations and real EEG data, showing that uncontrolled analyses can falsely link HEPs to task-related measures.

The paper analyzes the morphometric features of postganglionic sympathetic neurons innervating the myocardium and finds they are multipolar and larger than those innervating forelimb skin.

This study examines age-related differences in how cardiac and respiratory fluctuations influence the BOLD signal and shows that HRV-BF training can modulate physiological-BOLD coupling in an age-dependent manner.

This paper introduces a robust estimator for time-resolved cardiac sympathetic and parasympathetic indices using HR and HRV dynamics, outperforming standard spectral methods.

This study investigates how pleasant odors affect autonomic responses and brain-body rhythm coupling compared to music, finding that odors uniquely slow breathing and synchronize physiological and neural activity.

This study compares intrinsic cardiac neurons across humans, mice, and pigs, revealing species-specific differences in structure, function, and neuropeptide expression.

This paper shows that phasic pupil size changes occur along low-dimensional manifolds constrained by physiological substrates, providing a unified analytical framework for pupillometry.

This study investigates brain-heart interactions during emotional arousal in immersive VR, finding reduced HEP amplitudes and altered information flow in temporo-occipital regions.

This study examines how subthreshold tactile stimuli affect autonomic nervous activity and cortical processing by measuring heart rate and heartbeat-evoked potentials in humans.

This paper investigates the relationship between respiratory patterns and arousal, finding stronger coupling during rest and a role for respiratory rate in modulating arousal dynamics.

The paper analyzes neural responses to extrasystoles using EEG and ECG data, finding reduced HEP for ventricular extrasystoles and increased HEP in postextrasystolic beats.

The paper predicts instantaneous heart period from whole brain fMRI data using machine learning, identifying cortical and subcortical brain networks linked to psychological stress as reliable predictors.

This study uses transcranial stimulation to show that frontal delta oscillations causally affect heartbeat perception, with enhanced synchrony reducing detection accuracy.

The paper investigates how heart rate variability modulates brain oscillatory activity and links heart-brain coupling to individual trait characteristics.

BrainBeats is an open-source EEGLAB plugin that jointly analyzes EEG and cardiovascular signals using three protocols for brain-heart interplay research.

This study uses ingestible pills to measure GI tract physiology during emotional video exposure, finding links between gastric pH and reported emotions like disgust and happiness.

This study analyzes heart rate and respiration rate dynamics using information theory to identify biomarkers for digital phenotyping in humans.

This study develops a method to estimate time-resolved sympathetic and parasympathetic modulations in rat cardiac dynamics, validated against standard LF and HF measures.

This study investigates how HEP amplitude relates to attention and respiration during interoceptive and exteroceptive tasks, finding exhalation drives HEP increases during cardiac attention.

This paper models cardiorespiratory coherence during exercise anticipation, finding that sympathetic modulation, low vagal tone, and respiratory irregularity reduce coherence.

This study investigates functional Brain-Heart Interplay (BHI) dynamics in individuals with depressive symptoms compared to healthy controls, finding altered efferent and afferent activity patterns associated with negative emotional processing.

The study compares heart rate variability (HRV) under different running conditions with similar heart rates, finding that one estimator depends on exercise intensity while another is sensitive to running conditions.

This study examines the effects of an 80-second breathing exercise with prolonged inspiratory period on sympathetic activity and neural activity, finding increased beta wave power, heart rate, and heart rate variability.

This study evaluates large-scale electrodermal sensing using Fitbit Sense 2 devices to analyze physiological responses to stressors and circadian rhythms across 16,000 individuals.

The paper evaluates EEG and HRV metrics from portable devices to identify correlates of well-being in real-world settings, finding associations between eudaimonic well-being and HRV metrics, and physical well-being and EEG asymmetry.

The paper examines the relationship between subjective and objective measures of cognitive load in call center workers, finding that personality traits influence subjective perception but not objective physiological responses.

The paper evaluates delayed blood pressure recovery after exercise in middle-aged healthy individuals, finding associations with autonomic dysfunction and pulse pressure.

This study evaluates the autonomic effects of transcutaneous auricular nerve stimulation at four ear sites, finding that heart rate variability changes significantly across all sites with baseline LF/HF ratio predicting response.