Seppo Ahlfors, PhD

Professional Information


Associate Professor of Radiology, Harvard Medical School
Assistant Neuroscientist, Massachusetts General Hospital
Technical Director, MEG Core, Martinos Center


PhD Technical Physics/Biomedical Engineering, Helsinki University of Technology, Finland, 1994

Martinos Faculty


Mailing Address

Building 149, Room 2301
13th Street
Charlestown, MA 02129

General Contact Information


Additional Information


My research concerns spatiotemporal imaging of human brain function. I have applied integrated magnetoencephalography (MEG), electroencephalography (EEG), and functional magnetic resonance imaging (fMRI) to studies of cortical processing of visual information, including contrast patterns and visual motion. My research involves development of techniques for the analysis of multimodal biomedical imaging data, in particular, for the use of fMRI data to inform the source estimation (inverse problem) of MEG and EEG. Currently I am studying theoretical characteristics of the sensitivity of MEG and EEG sensor arrays and the cancellation of signals when multiple brain areas are active simultaneously. I am applying the source estimation methods to experimental data in collaboration with several researches how are using MEG/EEG/fMRI to study cognitive functions in normal and clinical populations, including dyslexia and obsessive-compulsive disorder.