TTUHSC School of Allied Health Sciences
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Steven Sawyer Ph.D. PT

Professor and Chair, Department of Rehabilitation Sciences

Associate Dean (Faculty Development), School of Allied Health Sciences


  • 1997 Masters of Physical Therapy - Texas Tech University Health Sciences Center
  • 1988 Doctor of Philosophy in Neuroscience - University of California at San Diego
  • 1980 Bachelor of Science in Biology - University of California at Irvine


  • Certification in Vestibular Rehabilitation, Emory University, 2001
  • Texas License: Physical Therapy, 1997


  • Postural control
  • Vestibular system dysfunction
  • Treatment Efficacy

SELECTED PUBLICATIONS (Limit to 20 recent publications)

(Total number of peer-reviewed publications, book chapters, and presentations = 60)

Sawyer S.F. (2009) Analysis of Variance: The Fundamental Concepts. Journal of Manual & Manipulative Therapy. 17, E27-E38.

Lewis NL, Brismée JM, James CR, Sizer PS, Sawyer SF. (2009). The Effect of Stretching on Muscle Responses and Postural Sway Responses during Computerized Dynamic Posturography in Women and Men.  Archives of Physical Medicine and Rehabilitation. 90, 454-462.

Smith TM, Sawyer SF, Sizer PS, Brismée JM. (2008). The Double Crush Syndrome: A Common Occurrence In Cyclists With Ulnar Nerve Neuropathy – A Case-Control Study. Clinical Journal of Sport Medicine. 18, 55-61.

Sizer P, Sawyer S, Felstehausen V, Couch S, Dornier L, Cook C. (2008). Intrinsic and extrinsic factors important to manual therapy competency development: A delphi investigation. Journal of Manual and Manipulative Therapy. 16, 9-19.

Dedrick, GS, Sizer, PS, Merkle, JN, Hounshell, TR, Robert-McComb, JJ, Sawyer, SF, Brismee, JM,  James, CR.  (2008). Effect of sex hormones on motor control patterns during landing.  Journal of Electromyography and Kinesiology 18: 68-78.

Gilbert, KK, Brismee, JM, Collins D, James CR, Shah RV, Sawyer SF and Sizer PS.  (2007). Lumbosacral nerve root displacement and strain: Part 1 - A novel measurement technique during straight leg raise in unembalmed cadavers.  Spine, 32: 1513-1520.

Gilbert KK, Brismee JM, Collins D, James CR, Shah RV, Sawyer SF, Sizer PS. (2007). Lumbosacral nerve root displacement and strain: Part 2. A comparison of two straight leg raise conditions in unembalmed cadavers. Spine, 32: 1521-1525.

Sizer PS, Felstehausen V, Sawyer S, Dornier L, Matthews P, Cook C. (2007). Eight critical skill sets required for manual therapy competency: A delphi study and factor analysis of physical therapy educators of manual therapy. Journal of Allied Health 36:30-40.

Brismee JM, Gipson D, Ivie D, Lopez A, Moore M, Matthijs O, Phelps V, Sawyer S, Sizer P. (2006). Interrater reliability of a passive physiological intervertebral motion test in the mid-thoracic spine. Journal of Manipulative Physiological Therapeutics 29:368-373.

Brismee, J-M, Gilbert, K, Isom, K, Hall, R, Leathers, B, Sheppard, N, Sawyer, S, Sizer, P (2004). The rate of false positive using the Cyriax release test for thoracic outlet syndrome in an asymptomatic population.  Journal of Manual and Manipulative Therapy 12:73-81.

Hooper, TL, Dunn, DM, Props, JE, Bruce, BA, Sawyer, SF, Daniel, JA. (2004). The Effects of Graded Forward and Backward Walking on Heart Rate and Oxygen Consumption.  Journal of Orthopedic and Sports Physical Therapy 34: 65-71.

Chang, J-Y, Sawyer, SF, Paris, JP, Kirillov, AB and Woodward, DJ Single neuronal responses in medial prefrontal cortex during cocaine self-administration in freely moving rats. Synapse 26: 22-35 (1997).

Chang, J-Y, Paris, JP, Sawyer, SF, Kirillov, AB and Woodward, DJ Neuronal spike activity in rat nucleus accumbens during cocaine self-administration under different fixed-ratio schedules.  Neuroscience 74: 483-497 (1996).

Sawyer, SF, Tepper, JM, and Groves, PM Cerebellar-responsive neurons in the thalamic ventroanterior-ventrolateral complex of rats: light and electron microscopy.  Neuroscience  63: 725-745 (1994).

Sawyer, SF, Young, SJ, Groves, PM and Tepper, JM Cerebellar-responsive neurons in the thalamic ventroanterior-ventrolateral complex of rats: Light and electron microscopy. Neuroscience 63: 711-724 (1994).

Chang, J-Y, Sawyer, SF, Lee, R-S and Woodward, DJ Electrophysiological and pharmacological evidence for the role of the nucleus accumbens in cocaine self-administration in freely moving rats.  Journal of Neuroscience 14:1224-1244 (1994).

Sawyer, SF, Martone, ME and Groves, PM.  A GABA immunocytochemical study of rat motor thalamus: Light and electron microscopic observations.  Neuroscience 42:103-124 (1991).

Sawyer, SF, Young, SJ and Groves, PM Quantitative Golgi study of anatomically identified subdivisions of motor thalamus in the rat.  Journal of Comparative Neurology 286:1-27 (1989).

Tepper, JM, Sawyer, SF and Groves, PM Electrophysiologically identified nigral dopaminergic neurons intracellularly labeled with HRP: Light microscopic analysis.  Journal of Neuroscience 7:2794-2806 (1987).

Ryan, LJ, Tepper, JM, Sawyer, SF, Young, SJ and Groves, PM Autoreceptor activation in central monoamine neurons: Modulation of neurotransmitter release is not mediated by intermittent axonal conduction.  Neuroscience 15:925-931 (1985).

Sawyer, S.F., Tepper, J.M., Young, S.J. and Groves, P.M. Antidromic activation of dorsal raphe neurons from neostriatum: Physiological characterization and effects of terminal autoreceptor activation.  Brain Research 332:15-28 (1984).

Kozlowski, MR, Sawyer, SF and Marshall, JF Behavioral effects and supersensitivity following nigral dopamine receptor stimulation. Nature 287:52-54 (1980).