TY - JOUR
T1 - Resting state connectivity of the human habenula at ultra-high field
AU - Torrisi, Salvatore
AU - Nord, Camilla L.
AU - Balderston, Nicholas L.
AU - Roiser, Jonathan P.
AU - Grillon, Christian
AU - Ernst, Monique
N1 - Publisher Copyright:
© 2016
PY - 2017/2/15
Y1 - 2017/2/15
N2 - The habenula, a portion of the epithalamus, is implicated in the pathophysiology of depression, anxiety and addiction disorders. Its small size and connection to other small regions prevent standard human imaging from delineating its structure and connectivity with confidence. Resting state functional connectivity is an established method for mapping connections across the brain from a seed region of interest. The present study takes advantage of 7 T fMRI to map, for the first time, the habenula resting state network with very high spatial resolution in 32 healthy human participants. Results show novel functional connections in humans, including functional connectivity with the septum and bed nucleus of the stria terminalis (BNST). Results also show many habenula connections previously described only in animal research, such as with the nucleus basalis of Meynert, dorsal raphe, ventral tegmental area (VTA), and periaqueductal grey (PAG). Connectivity with caudate, thalamus and cortical regions such as the anterior cingulate, retrosplenial cortex and auditory cortex are also reported. This work, which demonstrates the power of ultra-high field for mapping human functional connections, is a valuable step toward elucidating subcortical and cortical regions of the habenula network.
AB - The habenula, a portion of the epithalamus, is implicated in the pathophysiology of depression, anxiety and addiction disorders. Its small size and connection to other small regions prevent standard human imaging from delineating its structure and connectivity with confidence. Resting state functional connectivity is an established method for mapping connections across the brain from a seed region of interest. The present study takes advantage of 7 T fMRI to map, for the first time, the habenula resting state network with very high spatial resolution in 32 healthy human participants. Results show novel functional connections in humans, including functional connectivity with the septum and bed nucleus of the stria terminalis (BNST). Results also show many habenula connections previously described only in animal research, such as with the nucleus basalis of Meynert, dorsal raphe, ventral tegmental area (VTA), and periaqueductal grey (PAG). Connectivity with caudate, thalamus and cortical regions such as the anterior cingulate, retrosplenial cortex and auditory cortex are also reported. This work, which demonstrates the power of ultra-high field for mapping human functional connections, is a valuable step toward elucidating subcortical and cortical regions of the habenula network.
KW - 7 T
KW - Anxiety
KW - Depression
KW - Seed-based functional connectivity
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U2 - 10.1016/j.neuroimage.2016.10.034
DO - 10.1016/j.neuroimage.2016.10.034
M3 - Article
C2 - 27780778
AN - SCOPUS:85006341547
SN - 1053-8119
VL - 147
SP - 872
EP - 879
JO - NeuroImage
JF - NeuroImage
ER -