Heart Rate Variability and Autonomic Control

Assessing Garmin Stress Level Score Against Heart Rate Variability Measurements

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

Validating genuine changes in Heartbeat Evoked Potentials using Pseudotrials and Surrogate Procedures

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.

Morphometric Interpretation of Postganglionic Sympathetic Neurons that Innervate Myocardium

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.

The Physiological Component of the BOLD Signal: Impact of Age and Heart Rate Variability Biofeedback Training

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.

Robust and time-resolved estimation of cardiac sympathetic and parasympathetic indices

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

Pleasant smells: a privileged gateway to soothing autonomic responses and improving brain-body rhythm coupling

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.

Comparative specialization of intrinsic cardiac neurons in humans, mice, and pigs

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

Pupillary manifolds: uncovering the latent geometrical structures behind phasic changes in pupil size

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

Linking brain-heart interactions to emotional arousal in immersive virtual reality

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

Effects of unconscious tactile stimuli on autonomic nervous activity and afferent signal processing

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

A dynamic link between respiration and arousal

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.

Neural Representations of Extrasystoles: A Predictive Coding Perspective

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

Cortical and subcortical brain networks predict prevailing heart rate

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.

Heartbeat perception is causally linked to frontal delta oscillations

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

Heart-brain coupling and its relevance for individual trait characteristics

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

BrainBeats, an Open-Source EEGLAB Plugin to Jointly Analyze EEG and Cardiovascular Signals

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

Deep-body feelings: ingestible pills reveal gastric correlates of emotions

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.

Modeling the time-resolved modulations of cardiac activity in rats: A study on pharmacological autonomic stimulation

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

The interplay between focus of attention, respiratory phases, and the Heartbeat Evoked Potential

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

Impaired functional brain-heart interplay sustains emotion dysregulation in depressed individuals

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.

Cognitive load dissonance and personality factors: an empirical analysis in organizational settings

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.

Delayed blood pressure recovery after exercise stress test is associated with autonomic dysfunction and pulse pressure in a middle-aged healthy group

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

The autonomic effects of transcutaneous auricular nerve stimulation at different sites on the external auricle of the ear

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.

Neural computation in the brainstem for visceral sensation-driven haemodynamics

This study identifies computational principles in the rat brainstem's NTS that encode viscerosensory input-driven haemodynamics through low-dimensional neural trajectories.

Frequency-coded patterns of sympathetic vasomotor activity are differentially evoked by the paraventricular nucleus of the hypothalamus in the Goldblatt hypertension model

The paper investigates frequency-coded patterns of sympathetic vasomotor activity in the PVN of hypertensive rats, finding differential spectral responses in renal and splanchnic nerves.

Local and Global Measures of Information Storage for the Assessment of Heartbeat-Evoked Cortical Responses

The paper assesses heartbeat-evoked cortical responses using local and global measures of information storage, finding that local IS variability differs across cardiac cycle phases.

The within-person association of relative left frontal activity and vagally mediated heart rate variability not moderated by history of depression

The paper examines the within-person relationship between relative left frontal activity and vagally mediated heart rate variability in participants with and without a history of depression, finding no moderation by depression history.

On the reliability of wearable technology: A tutorial on measuring heart rate and heart rate variability in the wild

This paper provides a tutorial on assessing the reliability of heart rate and heart rate variability measurements using wearable sensors in psychophysiological research.

Tiered Sympathetic Control of Cardiac Function Revealed by Viral Tracing and Single Cell Transcriptome Profiling

The paper identifies distinct subtypes of cardiac-innervating sympathetic neurons using viral tracing and single-cell RNA sequencing, revealing their unique physiological roles in stress responses.

Heart Rate Variability Covaries with Amygdala Functional Connectivity During Voluntary Emotion Regulation

This study examines heart rate variability (HRV) and amygdala functional connectivity during emotion regulation, finding age-related differences in their relationship.