Table 7.

Characteristics of studies regarding the association of cognitive function with mental fatigue

Authors, date	Purpose	Study design/sampling	Sample size (n)/sample characteristics	Procedures and instruments	Key findings
Hampson et al., 2015	To investigate the impact of mental fatigue on brain connectivity among breast cancer patients who completed cancer treatments	Cross-sectional/convenience sampling	n=23 Female, breast cancer (Stage 0-IIIA), completed all cancer treatments Nonfatigued (n=8) Fatigued (n=15)	2 weeks after the initial screening, all eligible participants were divided into two groups based on the results of fatigue questionnaires Cognitive function Objective measures: fcMRI s Fatigue  Self-report: BFI, MFI	Mental fatigue was associated with greater DMN Greater connectivity of DMN was related to CI

BFI: Brief Fatigue Inventory, MFI: Multidimensional Fatigue Inventory, fcMRI: Functional connectivity magnetic resonance imaging, DMN: Default mode network, CI: Cognitive impairment