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Figure 7 | BioMedical Engineering OnLine

Figure 7

From: Physiological basis and image processing in functional magnetic resonance imaging: Neuronal and motor activity in brain

Figure 7

Time course of activation for the four stimulus epochs (B binocular, M monocular RL right eye stimulated first, followed by left eye stimulation, LR left eye stimulation first, followed by right eye stimulation)(left panel). During stimulation period, the subjects perceived a single flickering radial checkerboard, whereas during the rest period they viewed a single black fixation mark at constant mean luminance (right panel). Typical time courses from region of interest (ROI) centered in one hemisphere in the primary visual cortex (VI) or in an extrastriate region. Statistical parametric maps of significant BOLD responses to alternating monocular stimulation compared to the binocular condition (right panel). Voxels in bright regions indicate strong response to alternating monocular stimulus. The cross hairs represent the most active voxel within the cluster used for normalization (bottom panels).

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