Background: Extracranial signals are the main source of noise in functional near-infrared spectroscopy (fNIRS) as light is penetrating the cortex but also skin and muscles of the head. Aim: Here we performed three experiments to investigate the contamination of fNIRS measurements by temporal muscle activity. Material and methods: For experiment 1. we provoked temporal muscle activity ... https://www.diegojavierfares.com/special-offer-Salvation-Vinyl-LP-great-price/