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visuomotor control

As you read this web page, you probably have a cup of coffee or bottle of water nearby. If you need either, it is a simple matter to look where you remember leaving it, reach out, and accurately pick it up. Is it really that simple? Think for a moment about how complicated that process actually is, and how remarkably well you do it. When you reach out to pick up the cup of coffee, not only do you direct your arm towards the cup, but the posture of your hand and fingers anticipates the size, shape, and orientation of the cup well before contact is made. One of the things that make this possible is your keen sense of vision.

To study how vision is used to control the movements of the hand and arm, Dr. Marotta uses specialized motion tracking systems to reconstruct the movements of an individual's fingers, hand, arm and eyes during a reach. Comparing the performance of intact individuals, and patients with damage to particular regions of the brain, provides important insights into how information from the visual system and other sensory systems is used to control this important human behaviour.

Dr. Marotta also uses functional magnetic resonance imaging (fMRI) to study areas of the brain that play a role in the visual control of grasping, arm and eye-movements.


Representative Publications :

Prime, S.L. & Marotta, J.J. (2013). Gaze strategies during visually-guided versus memory-guided grasping. Experimental Brain Research, 225, 291-305.
Click Here to View PDF Desanghere, L. & Marotta, J.J. (2011). “Graspability” of objects affect gaze patterns during perception and action tasks. Experimental Brain Research, 212(2), 177-187.
Click Here to View PDF Baugh, L.A., Lawrence, J.M. & Marotta, J.J. (2011). Novel insular cortex and claustrum activation observed during a visuomotor adaptation task using a viewing window paradigm. Behavioral Brain Research, 223(2), 395-402.
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visuomotor control
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