White versus gray matter: fMRI hemodynamic responses show similar characteristics, but differ in peak amplitude

@inproceedings{Fraser2012WhiteVG,
  title={White versus gray matter: fMRI hemodynamic responses show similar characteristics, but differ in peak amplitude},
  author={Leanne M. Fraser and Michael R. Stevens and Steven D. Beyea and Ryan C. N. D’Arcy},
  booktitle={BMC Neuroscience},
  year={2012}
}
There is growing evidence for the idea of fMRI activation in white matter. In the current study, we compared hemodynamic response functions (HRF) in white matter and gray matter using 4 T fMRI. White matter fMRI activation was elicited in the isthmus of the corpus callosum at both the group and individual levels (using an established interhemispheric transfer task). Callosal HRFs were compared to HRFs from cingulate and parietal activation. Examination of the raw HRF revealed similar overall… CONTINUE READING
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