This approach also differs from other approaches which include head motion and task performance in defining success [ 18].
On the other hand, fMRI is limited by sensitivity to head motion, effect of task performance, brain atrophy, and transient brain and body states at the time of scanning (for example, arousal, attention, and effort).
Utilizing the 2-DOF system, the haptic control scheme is demonstrated to accurately track user motions, and guide task performance.
They used a visual rotational-motion task, finding performance benefits and increases in visual cortex BOLD when auditory clicks were made synchronous (versus asynchronous) with the visual rotations that had to be judged.
We replicate the previously reported sensitivity benefits for the motion-direction stimuli, however, we find no evidence that this enhanced motion processing benefits RSVP task performance.
With Virtual Environment (VE) a task can be visualized using real person and motion capture system for task performance.
Consistent with this idea performance on the RSVP tasks has been consistently reported to improve across the training sessions [2], [4], [8], but these studies were not designed to disentangle the potential contribution of the motion-stimuli to the RSVP task performance.
These TMS effects on BOLD signal in both regions were negatively related to performance (on the motion task), supporting the behavioral relevance of this pathway.
Three subjects were excluded from behavioral analyses, 1 due to a faulty button response box and the other 2 due to near-chance performance on the motion task.
A similar relationship was found between the TMS impact on BOLD in the right FEF and performance on the motion task (r(12) = 0.55, P = 0.05; Fig. 4 c).
