Novel multiscale regulation in human motor activity

Kun Hu, Plamen Ch Ivanov, Zhi Chen, Michael F. Hilton, H. Eugene Stanley, Steven Shea

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Human motor activity is influenced by many factors both extrinsic (work, recreation, reactions to unforeseen random events) and intrinsic (circadian and ultradian rhythms). We investigate if these factors fully account for the complex features observed in recordings of human activity. First, we measure activity over two weeks from forearm motion in subjects undergoing their regular daily routine. We show that no systematic ultradian rhythms exist in human activity during wakefulness. Furthermore, we demonstrate that during wakefulness human activity possesses previously unrecognized dynamic patterns characterized by long-range fractal correlations and nonlinear Fourier phase interactions. These patterns are unaffected by changes in the average activity level occurring within individual subjects throughout the day, on different days, and between subjects. Second, we find that these patterns persist when the same subjects undergo time-isolation laboratory experiments designed to account for the phase of the circadian pacemaker, and to control the known extrinsic factors. We attribute these newly discovered patterns to an intrinsic multi-scale dynamic regulation of human activity that is independent of known extrinsic factors, as well as known intrinsic factors (the circadian and ultradian rhythms).

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsS.M. Bezrukov, H. Frauenfelder, F. Moss
Pages235-243
Number of pages9
Volume5110
DOIs
StatePublished - 2003
Externally publishedYes
EventFluctuations and Noise in Biological, Biophysical, and Biomedical Systems - Santa Fe, NM, United States
Duration: Jun 2 2003Jun 4 2003

Other

OtherFluctuations and Noise in Biological, Biophysical, and Biomedical Systems
CountryUnited States
CitySanta Fe, NM
Period6/2/036/4/03

Fingerprint

Pacemakers
rhythm
wakefulness
Fractals
circadian rhythms
recreation
forearm
Experiments
fractals
isolation
recording
interactions

Keywords

  • Circadian pacemaker
  • Human motor activity
  • Long-range correlations
  • Multi-scale dynamic regulation
  • Scaling
  • Ultradian rhythm

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Hu, K., Ivanov, P. C., Chen, Z., Hilton, M. F., Stanley, H. E., & Shea, S. (2003). Novel multiscale regulation in human motor activity. In S. M. Bezrukov, H. Frauenfelder, & F. Moss (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 5110, pp. 235-243) https://doi.org/10.1117/12.497057

Novel multiscale regulation in human motor activity. / Hu, Kun; Ivanov, Plamen Ch; Chen, Zhi; Hilton, Michael F.; Stanley, H. Eugene; Shea, Steven.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / S.M. Bezrukov; H. Frauenfelder; F. Moss. Vol. 5110 2003. p. 235-243.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hu, K, Ivanov, PC, Chen, Z, Hilton, MF, Stanley, HE & Shea, S 2003, Novel multiscale regulation in human motor activity. in SM Bezrukov, H Frauenfelder & F Moss (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 5110, pp. 235-243, Fluctuations and Noise in Biological, Biophysical, and Biomedical Systems, Santa Fe, NM, United States, 6/2/03. https://doi.org/10.1117/12.497057
Hu K, Ivanov PC, Chen Z, Hilton MF, Stanley HE, Shea S. Novel multiscale regulation in human motor activity. In Bezrukov SM, Frauenfelder H, Moss F, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 5110. 2003. p. 235-243 https://doi.org/10.1117/12.497057
Hu, Kun ; Ivanov, Plamen Ch ; Chen, Zhi ; Hilton, Michael F. ; Stanley, H. Eugene ; Shea, Steven. / Novel multiscale regulation in human motor activity. Proceedings of SPIE - The International Society for Optical Engineering. editor / S.M. Bezrukov ; H. Frauenfelder ; F. Moss. Vol. 5110 2003. pp. 235-243
@inproceedings{39a363315f3540199711dddcbc951ab5,
title = "Novel multiscale regulation in human motor activity",
abstract = "Human motor activity is influenced by many factors both extrinsic (work, recreation, reactions to unforeseen random events) and intrinsic (circadian and ultradian rhythms). We investigate if these factors fully account for the complex features observed in recordings of human activity. First, we measure activity over two weeks from forearm motion in subjects undergoing their regular daily routine. We show that no systematic ultradian rhythms exist in human activity during wakefulness. Furthermore, we demonstrate that during wakefulness human activity possesses previously unrecognized dynamic patterns characterized by long-range fractal correlations and nonlinear Fourier phase interactions. These patterns are unaffected by changes in the average activity level occurring within individual subjects throughout the day, on different days, and between subjects. Second, we find that these patterns persist when the same subjects undergo time-isolation laboratory experiments designed to account for the phase of the circadian pacemaker, and to control the known extrinsic factors. We attribute these newly discovered patterns to an intrinsic multi-scale dynamic regulation of human activity that is independent of known extrinsic factors, as well as known intrinsic factors (the circadian and ultradian rhythms).",
keywords = "Circadian pacemaker, Human motor activity, Long-range correlations, Multi-scale dynamic regulation, Scaling, Ultradian rhythm",
author = "Kun Hu and Ivanov, {Plamen Ch} and Zhi Chen and Hilton, {Michael F.} and Stanley, {H. Eugene} and Steven Shea",
year = "2003",
doi = "10.1117/12.497057",
language = "English (US)",
volume = "5110",
pages = "235--243",
editor = "S.M. Bezrukov and H. Frauenfelder and F. Moss",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

}

TY - GEN

T1 - Novel multiscale regulation in human motor activity

AU - Hu, Kun

AU - Ivanov, Plamen Ch

AU - Chen, Zhi

AU - Hilton, Michael F.

AU - Stanley, H. Eugene

AU - Shea, Steven

PY - 2003

Y1 - 2003

N2 - Human motor activity is influenced by many factors both extrinsic (work, recreation, reactions to unforeseen random events) and intrinsic (circadian and ultradian rhythms). We investigate if these factors fully account for the complex features observed in recordings of human activity. First, we measure activity over two weeks from forearm motion in subjects undergoing their regular daily routine. We show that no systematic ultradian rhythms exist in human activity during wakefulness. Furthermore, we demonstrate that during wakefulness human activity possesses previously unrecognized dynamic patterns characterized by long-range fractal correlations and nonlinear Fourier phase interactions. These patterns are unaffected by changes in the average activity level occurring within individual subjects throughout the day, on different days, and between subjects. Second, we find that these patterns persist when the same subjects undergo time-isolation laboratory experiments designed to account for the phase of the circadian pacemaker, and to control the known extrinsic factors. We attribute these newly discovered patterns to an intrinsic multi-scale dynamic regulation of human activity that is independent of known extrinsic factors, as well as known intrinsic factors (the circadian and ultradian rhythms).

AB - Human motor activity is influenced by many factors both extrinsic (work, recreation, reactions to unforeseen random events) and intrinsic (circadian and ultradian rhythms). We investigate if these factors fully account for the complex features observed in recordings of human activity. First, we measure activity over two weeks from forearm motion in subjects undergoing their regular daily routine. We show that no systematic ultradian rhythms exist in human activity during wakefulness. Furthermore, we demonstrate that during wakefulness human activity possesses previously unrecognized dynamic patterns characterized by long-range fractal correlations and nonlinear Fourier phase interactions. These patterns are unaffected by changes in the average activity level occurring within individual subjects throughout the day, on different days, and between subjects. Second, we find that these patterns persist when the same subjects undergo time-isolation laboratory experiments designed to account for the phase of the circadian pacemaker, and to control the known extrinsic factors. We attribute these newly discovered patterns to an intrinsic multi-scale dynamic regulation of human activity that is independent of known extrinsic factors, as well as known intrinsic factors (the circadian and ultradian rhythms).

KW - Circadian pacemaker

KW - Human motor activity

KW - Long-range correlations

KW - Multi-scale dynamic regulation

KW - Scaling

KW - Ultradian rhythm

UR - http://www.scopus.com/inward/record.url?scp=0041324692&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0041324692&partnerID=8YFLogxK

U2 - 10.1117/12.497057

DO - 10.1117/12.497057

M3 - Conference contribution

AN - SCOPUS:0041324692

VL - 5110

SP - 235

EP - 243

BT - Proceedings of SPIE - The International Society for Optical Engineering

A2 - Bezrukov, S.M.

A2 - Frauenfelder, H.

A2 - Moss, F.

ER -