Lawrence W. Sheppard, Ph.D., Physics (Biomedical data analysis), Lancaster University, 2010

Postdoctoral Researcher
Primary office:
150 Higuchi Hall


Area of specialization
Wavelet analysis (data analysis of time-varying signals, with biological, physical or ecological applications)

Research interests:

  • Statistical analysis of wavelet coherence
  • Intracranial pressure analysis (biomedical physics application)
  • Skin temperature, anesthesia and ensembles of neurons (biomedical physics application)
  • Aphid monitoring and phenology
  • Plankton monitoring and climate

Selected Publications




Selected Publications:

Sheppard, L.W., Zhao, L., Anderson, T.L., Walter, J.A., and Reuman, D.C. 2018.  wsyn: Wavelet approaches to synchrony.  A software package for the R programming language, published after review on the Comprehensive R Archive Network (CRAN).  Developmnt version at

Reuman, D., Zhao, L., Sheppard, L.W., Reid, P.C. Cohen, J.E. 2018.  Synchrony affects Taylor's law in theory and data.  Proceedings of the National Academy of Science 114: 6788-6793.

Walter, J.A., Sheppard, L.W., Anderson, T.L., Kastens, J.H., Bejornstad, O.N., Liebhold, A.M., and Reuman, D.C. 2017.  The geography of synchrony.  Ecology Letters 20: 801-814.

Sheppard, L.W., Reid, P.C., and Reuman, D.C. 2017.  Rapid surrogate testing of wavelet coherences.  European Physical Journal, Nonlinear and Biomedical Physics 5:1.

Reuman, D.C., Zhao, L., Sheppard, L.W., Reid, P.C., and Cohen, J.E. 2017.  Synchrony affects Taylor's law in theory and data.  Proceedings of the National Academy of Sciences 114: 6788-6793.

defriez, E., Sheppard, L., Reid, P.C., and Reuman, D.C.  2016.  Climate-change-related regime shifts have altered spatial synchrony of plankton dynmaics in the North Sea.  Global Change Biology 10: 1111/gcb.13229.

Sheppard, L., Bell, J., Harrington, R., and Reuman, D.  2015.  Changes in large-scale climate alter spatial synchrony of aphid pests.  Nature Climate Change 6: 610-613. 

Sheppard, L.W., A. Stefanovska, P.V.E. McClintock (2013). "Testing for time-localized coherence in bivariate data." Phys. Rev. E 85 046205.

Sheppard, L.W., A.C., Hale, S. Petkoski, et al (2013). "Characterizing an ensemble of interacting oscillators: The mean-field variability index." Phys. Rev. E 87 012905.

Kvandal, P., L.W. Sheppard, S.A. Landsverk, et al (2013). "Impaired cerebrovascular reactivity after acute traumatic brain injury can be detected by wavelet phase coherence analysis
of the intracranial and arterial blood pressure signals." Journal of Clinical Monitoring and Computing 27 375-383.

Sheppard, L.W., A. Stefanovska, P.V.E. McClintock (2011). "Detecting the harmonics of oscillations with time-variable frequencies." Phys. Rev. E 83 016206.

Sheppard, L.W., V. Vuksanovic, A. Stefanovska (2011). "Oscillatory dynamics of vasoconstriction and vasodilation identified by time-localised phase coherence." Phys. Med. Biol. 56 3583.

For a complete list of publications, please see CV.


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