“…Overall, despite some remaining limitations (particularly regarding the restricted depth and overall spatial resolution as well as extracerebral hemodynamic influences), based on a number of practical advantages (i.e., relative insensitivity towards movement‐related artifacts, easy and cheap application, few contraindications, and availability of mobile devices), fNIRS has firmly established its role as a neuroimaging tool especially under circumstances in which other methods fail. Specifically, fNIRS allows for measurements under relatively naturalistic (i.e., non‐restrictive) experimental conditions; for example, during tasks involving overt speech (Ehlis, Haeussinger, Gastel, Fallgatter, & Plewnia, ; Heinzel et al, ; Nishimura et al, ; Tupak et al, ), whole‐body movements (Metzger et al, ; Suzuki et al, ), or real‐life social interaction (Egetemeir, Stenneken, Koehler, Fallgatter, & Herrmann, ; Herrmann et al, ). Furthermore, in the field of psychiatry, fNIRS allows access to clinical groups that can otherwise be difficult to assess (e.g., patients with schizophrenias or anxiety disorders).…”