title: Resting state connectivity of the human habenula at ultra-high field.
abstract: 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 7T 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.
authors: Section on the Neurobiology of Fear and Anxiety, National Institute of Mental Health, Bethesda, MD, United States.
authors: Salvatore
authors: S
authors: Torrisi
authors: Neuroscience and Cognitive Neuropsychiatry group, University of College, London, UK.
authors: Camilla L
authors: CL
authors: Nord
authors: Section on the Neurobiology of Fear and Anxiety, National Institute of Mental Health, Bethesda, MD, United States.
authors: Nicholas L
authors: NL
authors: Balderston
authors: Neuroscience and Cognitive Neuropsychiatry group, University of College, London, UK.
authors: Jonathan P
authors: JP
authors: Roiser
authors: Section on the Neurobiology of Fear and Anxiety, National Institute of Mental Health, Bethesda, MD, United States.
authors: Christian
authors: C
authors: Grillon
authors: Section on the Neurobiology of Fear and Anxiety, National Institute of Mental Health, Bethesda, MD, United States.
authors: Monique
authors: M
authors: Ernst
mesh_terms: D000328:Adult; D001921:Brain / Q000000981:diagnostic imaging / Q000502:physiology*; D063132:Connectome / Q000379:methods*; D005260:Female; D019262:Habenula / Q000000981:diagnostic imaging / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D055815:Young Adult
keywords: 7T; Anxiety; Depression; Seed-based functional connectivity