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Abstract #2845

Altered response of the functional network during pain stimulus in small fiber neuropathy

Gerhard Drenthen1, Amir Far2, Catharina Faber2, Jaymin Upadhyay3, David Linden4, Raquel van Gool4, Walter Backes1, Janneke Hoeijmakers2, and Jacobus Jansen1
1Department of Radiology & Nuclear Medicine, School for Mental Health and Neuroscience, Maastricht University Medical Center, Maastricht, Netherlands, 2Department of Neurology, Maastricht University Medical Center, Maastricht, Netherlands, 3Boston Children's Hospital, Boston, MA, United States, 4School for Mental Health & Neuroscience, Maastricht University Medical Center, Maastricht, Netherlands

Synopsis

Keywords: Brain Connectivity, fMRI (task based), Chornic painSmall fiber neuropathy (SFN) is a neuropathic disorder that is associated with chronic pain, which may have an effect on the functional organization of the brain network. Here, we study the effect of pain on the functional network by applying a painful stimulus block-design during an fMRI acquisition. We show global changes in the functional network for patient with idiopathic and genetic SFN compared to controls. Moreover, self-reported pain scores correlated with nodal importance of the somatosensory cortex (postcentral gyrus) in the pain-evoked cerebral functional network, indicating that the functional network takes an important role in the perception of pain.

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