Decoding of Goal-Directed Attentional Activity in Visual Cortex Predicts Direction of Movement on a Complex Flight Simulation Task.
The objective of this experiment is to determine goal-direct attentional neural correlates underlying movement intention and performance on a complex perceptual-motor task (flight simulation). The results of both fMRI and MEG experiments demonstrate that direction of flight can be predicted from visual cortex activity prior to control stick movement. Together, these results suggest that visual cortical activity is modualated by goal directed attentional processes that are predictive of future stimulation and related to task performance likely serving as a target space for motor control.
Example Movie of flying task
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No Statistical difference in activity in the brain at p < 0.005 uncorrected.
Decoding Using SVM (Support Vector Machine) over single scans of voxels in visual cortex.
The Decoding Performance in Visual areas for the Flying Condition Precedes that in the Watching Condition suggesting the visual activity is reflective of goal-directed attentional processes involved with flying.
Current Sources Localized to Visual Areas using VBMEG with fMRI Prior Constraint
Using Sparse Logistic Regression, single trial MEG data from current sources localized in visual areas one-second just prior to onset of control stick movement on the flying task can significantly predict direction of flight (68%).
Continuous aileron and elevator deflection can be predicted from visual cortex activity 200msec prior to control stick movement with a fair degree of accuracy to reconstruct the flight of the airplane on some trials.
Together, these results suggest that visual cortical activity is modulated by goal-directed attentional processes that are predictive of future stimulation and related to task performance likely serving as a target space for motor control.
Callan, D., Gamez, M., Cassel, D., Kawato, M., Sato, M. (2011). Brain Imaging Airplane Piloting Performance. 8th Annual World Congress of IBMISPS on Brain, Spinal Cord Mapping and Image Guided Therapy. San Francisco, June 8-10.
Callan, D., Gamez, M., Cassel, D., Kawato, M., Sato, M. (2011). Goal directed modulation of visual areas predicts direction of movement during a complex airplane piloting task. Neuroscience 2011. Yokohama, Japan. PDF