RESEARCH PROJECTS
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RESEARCH TOOLS
Measure the spatial and temporal
(EEG) potential maps in
response to sound stimuli to find
indicators of pain in children.
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Multi-electrode caps to measure
potentials on the head (EEG)
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Access to functional MRI.
Design a system that monitors
the position of the leads during
the EEG and MRI measurements
so as to combine MRI and EEG
maps into a single image (image
fusion).
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Personal workstations with
measuring and analysis
programs.
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Quantitative models to simulate
measured activities.
Refine our mathematical
methods and use existing
commercial software to calculate
the location of sources from the
measured (EEG) brain activity
(inverse solution).
IMAGING OF
BIOELECTRIC &
BIOMAGNETIC
SIGNALS:
CLINICAL STUDIES
GERHARD STROINK
DALHOUSIE UNIVERSITY
Calculate the surface potentials
and magnetic fields due to
specific sources in the heart or
brain (forward solution).
Info on graduate studies at Dal
Physics (tuition, admission,
stipend, bursaries, etc).:
www.physics.dal.ca/grad.html
Modeling potentials (on the torso) and
magnetic fields (in the measuring plane)
due to current sources in the heart.
www.physics.dal.ca/~medbiophys
Dal Biomedical Engineering:
www.dal.ca/bme
Dr. Gerhard Stroink, P.Eng.
Department of Physics and Atmospheric
Science, Dalhousie University
Halifax, NS B3H 3J5, Canada
(902) 494-7062
stroink@dal.ca
DEPARTMENT OF
PHYSICS AND
ATMOSPHERIC SCIENCE
& SCHOOL OF
BIOMEDICAL
ENGINEERING
RESEARCH GOALS
 To learn more about the pain
processes in children by
measuring with EEG the attention
to sounds before and after
admitting pain reducing drugs.
 To measure EEG and MRI in
order to determine the location of
active sources in the brain (e.g.,
due to epilepsy).
 To combine this information with
FMRI measurements under the
same conditions in order to
understand functional processes
in the brain (functional imaging).
ACQUIRED RESEARCH
SKILLS
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Instrumentation
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Data analysis
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Mathematical
modeling
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Imaging
while working in an interdisciplinary
research group in a clinical
environment.
The tools can be applied to many
research areas.
Jobs: Lead-in to medical physics,
biomedical or any other physics job.
COLLABORATIONS
Faculty:
Dr. John Connolly (Psychology)
Dr. Ryan D’Arcy (NRC)
Dr. Steven Beyea (NRC)
Departments:
Institute for Biodiagnostics (IBD
Atlantic)
Medical Physics Dept., QEII
Hospital
Location: The main laboratory is in
the Brain Repair Centre, QEII Hospital.
We also have laboratories in the
Physics Building.
Contour of head and location of leads.
MRI image reconstruction of skin, with
brain potentials and lead positions
superimposed (right).
Brain image extracted from MRI to
visualize source location.