Fig. 3.

OMAG provides an ability to detect the localized hemodynamic response within the brain cortex upon whisker stimulation. (a) Reflectance IOSI map of the cortical tissue at cranial window, where the dashed line indicates the cross-section position for OCT imaging. (b) Cross-section of OCT structural image. (c) Cross-section of OMAG blood flow image. R1 indicates the activated region and R2 indicates the control region. (d) Temporal profile of OMAG signal change in response to whisker stimulation at activated (red curve) and control (black curve) regions. $\mathrm{\Delta }I$ is the change in OMAG signal, and I is the baseline OMAG signal. Dashed lines indicate the start and the end of stimulation time.