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Updated: Jan 27, 2026

Silicon Nanowires and Optical Stimulation for Investigations of Intra- and Intercellular Electrical Coupling
Published on: January 28, 2021
Abnormal synchronization patterns in the electrical stimulation-contractile response coupling decrease with noise
Alberto Peña-Romo1, Amelia Ríos1, Bruno A Escalante1
1Centro de Investigación y de Estudios Advanzados del Instituto Politécnico Nacional (IPN), Vía del Conocimiento 201, Parque de Investigación e Innovación Tecnológica, 66600, Apodaca, NL, Mexico.
Abstract:
Synchronization theory predicts that if an oscillator interacts with a rhythmical external force, then it should react to a rhythmical force by adjusting its frequency. Furthermore, noise is present in nature, and it affects the nervous and cardiovascular systems. In this paper, we analyze the heart as an oscillator, where noisy periodic electrical stimulation can be regarded as an external forcing. This study aimed to investigate, from an experimental point of view, whether noise can induce synchronization of higher order in the mechanical heart response. A Langendorff heart preparation was used to obtain two variables of the mechanical response, intensity of contractile force and heart rate. The experiments show frequency locking in the electrical stimulation-contractile response coupling with and without noise induced. The role of noise in the response of effector organs invites further investigation.
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