Fatigue in Chronic Pain - Cognition, Emotional Aspects, Biomarkers, and Neuronal Correlates

"The neuropsychological assessment consists of following tests and questionnaires:~* Wechsler Adult Intelligence Scale (WAIS)-III: Digit-Symbol-Coding (Coding)~* WAIS-IV: Digit Span, Matrix reasoning~* Delis-Kaplan Executive Function Scale (D-KEFS): Color-Word Test, Word Fluency Test~* Ruff 2 \& 7~* MapCog Spectra~Questionnaires:~* EuroQoL five dimensions questionnaire (EQ5D)~* Hospital Anxiety and Depression Scale (HADS)~* Insomnia Severity Index (ISI)~* Multidimensional Fatigue Inventory-20 (MFI-20)~* Multidimensional Pain Inventory (MPI)~* Screening questions on physical activity~* Visual analogue scale on fatigue (VAS-f) before and after NPA~* Visual analogue scale on fatigue (VAS-f) and pain before and after the fMRI scanning.~* Pain level, experienced during the NPA, will be rated (0-10) at the end of the session"

"Imaging (24 patients + 22 controls):~BOLD resting-state before and after 20-min vigilance task (e-prime). During the vigilance task, fMRI is performed.~Clinical protocol:~1. High-resolution T1-weighted.~2. High-resolution T2-weighted Scan (FLAIR)."

Blood samples from inflammatory biomarkers will be taken on 36 patients and 36 controls. Everyone who undergoes imaging will undergo blood tests.