Posters on the Hill - Jan 2003, Capitol Hill, UT
Brain Visualization of
Facial Recognition MRI Data
J. Balling, C. R. Johnson
Scientific Computing & Imaging Institute
School of Computing, University of Utah
Facial Recognition Study during fMRI Scanning.
Recognizing Line Drawings using SPM.
Recognizing Photographs using SPM.
3-D Anatomical Imaging using Simian.
3-D Functional Imaging of Line Drawing Recognition using Simian.
3-D Functional Imaging of Photograph Recognition using Simian.
ABSTRACTMagnetic Resonance Imaging (MRI) was used to obtain image volumes (data acquired in slices representing the entire brain area) from both high-resolution anatomical scans and low-resolution functional scans. During functional scanning, subjects were introduced to both photographs and line drawings of faces and then asked to correctly identify the photographs or line drawings of the same faces. Functional image volumes were obtained from these two tasks.
Spatial Parametric Mapping (SPM) software was used to determine areas of unique brain activity present in the functional MRI data volumes. Visual comparison of these areas shows that the activation clusters of this subject were large and intense during the photograph recognition task. During the line drawing recognition task, the activation clusters were smaller and less intense.
Simian software was used to display the volumes in 3-D and manipulate the images in real-time. The activation clusters, obtained with SPM, from each task were superimposed on the subject’s anatomical brain volume to provide a realistic representation of the data. The activation clusters for both tasks were also superimposed upon each other to show similarities and differences between them.
MISC TEXTSFacial Recognition Study. For this study, functional MRI was used to obtain image volumes of the brain while patients performed simple tasks. Subjects were introduced to either photographs or line drawings of faces associated with a name (top). Later, Subjects were asked to choose the correct name for either the photograph or line drawing of those faces (bottom).
Recognizing Line Drawings. SPM was used to determine the areas of unique brain activity that occurred when subjects were asked to recognize line drawings of familiar faces (top). To provide physical orientation of the data, the activation clusters from this analysis were superimposed on the subject’s anatomical brain volume (bottom).
Recognizing Photographs. SPM was used to determine the areas of unique brain activation that occurred when subjects were asked to recognize photographs of familiar faces (top). To provide physical orientation of the data, the activation clusters from this analysis were superimposed on the subject’s anatomical brain volume (bottom).
3-D Anatomical Imaging. Simian was used to interactively display and manipulate the subject’s anatomical brain volume in 3-D (top). Three different clipping plains were used to view specific structures within the brain volume (bottom).
3-D Functional Imaging of Photograph Recognition. Simian was used to display and manipulate the 3-D areas of brain activity that occurred when subjects tried to recognize photographs of familiar faces (top). To provide realistic orientation of the data, the activation clusters were superimposed on the subject’s 3-D anatomical brain volume and viewed using three different clipping plains (bottom).
3-D Functional Imaging of Line Drawing Recognition. Simian was used to display and manipulate the 3-D areas of brain activity that occurred when subjects tried to recognize line drawings of familiar faces (top). To provide realistic orientation of the data, the activation clusters were superimposed on the subject’s 3-D anatomical brain volume and viewed using three different clipping plains (bottom).
ME PRESENTING
