Respiration shapes response speed and accuracy with a systematic time lag

Proceedings of the Royal Society B Biological Sciences, Год журнала: 2025, Номер 292(2044)

Опубликована: Апрель 1, 2025

Sensory–cognitive functions are intertwined with physiological processes such as the heart beat or respiration. For example, we tend to align our respiratory cycle expected events actions. This happens during sports but also in computer-based tasks and systematically structures phase around relevant events. However, studies show that trial-by-trial variations shape brain activity speed accuracy of individual responses. We both phenomena—the alignment respiration explanatory power on behaviour—co-exist. In fact, average an relative experimental trials trial-to-trial hold significant predictive behavioural performance, particular for reaction times. co-modulation behaviour emerges regardless whether generally breathes faster slower is strongest about 2 s prior participant’s The persistence these effects across 12 datasets 277 participants performing sensory–cognitive confirms robustness results, suggests a profound time-lagged influence structured sensory–motor

Язык: Английский

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VARX Granger analysis: Models for neuroscience, physiology, sociology and econometrics

PLoS ONE, Год журнала: 2025, Номер 20(1), С. e0313875 - e0313875

Опубликована: Янв. 9, 2025

Complex systems, such as in brains, markets, and societies, exhibit internal dynamics influenced by external factors. Disentangling delayed effects from within these systems is often difficult. We propose using a Vector Autoregressive model with eXogenous input (VARX) to capture interactions between variables. Whereas this aligns Granger’s statistical formalism for testing “causal relations”, the connection two not widely understood. Here, we bridge gap providing fundamental equations, user-friendly code, demonstrations simulated real-world data neuroscience, physiology, sociology, economics. Our examples illustrate how avoids spurious correlation factoring out influences dynamics, leading more parsimonious explanations of systems. For instance, neural recordings find that prolonged response brain can be explained short exogenous effect, followed recurrent activity. In human recovers established eye movements affecting pupil size bidirectional interaction respiration heart rate. also provide methods enhancing efficiency, L2 regularization limited basis functions cope extended delays. Additionally, analyze performance under various scenarios where assumptions are violated. MATLAB, Python, R code provided easy adoption: https://github.com/lcparra/varx .

Язык: Английский

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Interpersonal synchronization as an objective measure of listening engagement

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Фев. 26, 2025

Abstract Listening engagement plays a crucial role in effective communication and knowledge transfer, reflecting state of deep absorption an auditory stimulus. The available behavioral assessments listening are limited capturing its multidimensional nature. Measuring objectively using brain body signals is compelling alternative. In particular, interpersonal synchronization—observed through synchronized physiological responses among listeners—may offer promising objective measure. this study, we examined synchronization activity, heart rate, electrodermal activity between participants while they listened to engaging non-engaging stories. Subjective ratings were collected as ground truth reference. Results showed higher across all modalities when stories compared ones, with significant correlations measures subjective engagement. These results confirm that may be reliable, marker We anticipate these will provide powerful framework for future research relevant domains, including education, audiology, science, enable impactful real-world applications, such automatically tracking audience entertainment, broader societal contexts. Significance Statement the first direct empirical evidence serves robust reliable Using novel experimental paradigm ecologically valid stimuli, demonstrate heightened leads increased neural listeners, disengagement reduces it. This measure significantly correlates established assessments, validating relevance reliability. Our innovative approach offers domains (education, audiology science) enables automatic domains.

Язык: Английский

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The brain–heart axis: integrative cooperation of neural, mechanical and biochemical pathways

Nature Reviews Cardiology, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Язык: Английский

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Delta-band inter-brain synchrony reflects collective audience engagement with live dance performances.

Опубликована: Авг. 6, 2024

Live performances, where groups of people collectively experience dance, music, or theatre, are a ubiquitous feature human cultures. Yet, neuroscientific studies these inherently social art forms almost exclusively involve watching video sound recordings alone in laboratory. Across three live dance we simultaneously measured real-time dynamics between the brains up to 23 audience members using mobile wet-electrode EEG. Inter-brain synchrony (IBS) delta band (1-4 Hz) varied systematically with dancers’ movements and audiences’ collective engagement as predicted by choreographer. IBS was reduced when watched performance on their own Choreographic sections higher were also rated more engaging an independent sample viewers. Our study shows that experiences measurable dynamic brain co-present spectators reflects artistically directed performance.

Язык: Английский

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