Abstract #1553

Morphology of the fMRI Magnitude Response to Interictal Spikes: Timing, Amplitude & the Dip

Padmavathi Sundaram^1,2, William M. Wells², Robert V. Mulkern¹, Mukund Balasubramanian¹, Ellen J. Bubrick³, Darren B. Orbach^1,2

¹Radiology, Children's Hospital Boston, Boston, MA, United States; ²Radiology, Brigham & Women's Hospital, Boston, MA, United States; ³Neurology, Brigham & Women's Hospital, Boston, MA, United States

An investigation of the MR magnitude response to interictal spikes. We report morphology of the spike-related response - amplitudes, duratiosn and the prolonged post-spike MR signal undershoot.