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Dr. Parveen N.S. Bawa

Professor

 

M.Sc. Physics 
Ph.D. Biophysics (University of Alberta)


Phone: (778) 782-3576
Fax: (778) 782-3040 
Email:
 parveen_bawa@sfu.ca

Neuroscience

The overall objectives of our research are to understand integration of neural information in mammalian spinal cord using both experimental and modelling studies. At present all experimental work is performed on human subjects. The behaviour of single cells and neuronal circuitry is interpreted from analysis of EMG and single motor unit recordings. The inputs to the spinal cord are produced from electrical stimulation of the peripheral nerves, or transcranial magnetic stimulation of the cortex. With these facilities, research questions can also be aimed at pathological states, rehabilitation and exercise. Questions on mechanisms cannot always be answered with animal or human experiments. Analytical models are helpful in such situations. Models not only answer questions but also make predictions which can be tested with experiments. At present our single cell and neural network models are based on physiological data available from the literature on cat, monkey and human experiments. The laboratory has all the necessary facilities for experimental and modelling work.

Recent Publications (*students, ** PDFs ):

  • KVB Johnson *, SC Edwards*, C Van Tongeren *, P Bawa . Properties of human motor units after prolonged activity at a constant firing rate. Experimental Brain Research (in press).
  • P Bawa , GR Chalmers, H Stewart, AA Eisen . Reponses of ankle extensor and flexor motoneurons to transcranial magnetic stimulation. J Neurophysiol . 88: 124-132, 2002.
  • P Bawa . On tuning of muscle output by the nervous system. Exercise and Sport Sciences Reviews 30(2): 59-63, 2002.
  • PJ Stotz *, P Bawa . Motor unit recruitment during lengthening contractions of human wrist flexors. Muscle and Nerve 24(11): 1535-1541, 2001.
  • P Bawa , GR Chalmers**, KE Jones*, K Søgaard ** and ML Walsh**. Control of wrist joint in humans .( Invited Review). Eur . J. Applied Physiol . 83: 116-127 ,2000.
  • KE Jones*, P Bawa . A comparison of human motoneuron data to simulated data using cat motoneuron models. J. Physiol . ( Paris ), 93: 43-59, 1999.
  • C Rossi-Durand, KE Jones*, S Adams * and P Bawa . Comparison of H-reflexes in upper and lower limb muscles . Exp Brain Research, 126:117-127, 1999.
  • P Bawa , KE Jones*. Do lengthening contractions represent a case of preferential recruitment of large motor units. Progress in Brain Research, Vol. 123, Ch. 19, 215-220, 1999.
  • K.E. Jones*, P Bawa . Computer simulations of responses of human motoneurons to composite 1a EPSPs : Effects of background firing rate. J Neurophysiol . 77: 405-420, 1997.
  • GR Chalmers** , P Bawa . Synaptic connections from wrist flexor and extensor muscle large afferents to synergistic motoneurones in man. Exp Brain Research, 116: 351-358, 1997.
  • KE Jones*, B Calancie , A Hall, P Bawa . Comparison of peripheral 1a and corticomotoneuronal composite EPSPs in human motoneurons . EEG and Clin Neurophysiol . 101:431-437, 1996.