NIRS signals and VMR pattern for subject B – 2nd test. Time course of the O2Hb and CO2Hb concentration signals for subject B (post-stroke subject) during BH (left panel) and bidimensional VMR pattern (right panel). Data are realtive to the second test, i.e. after one year of drug and logopedic theraphy. The NIRS signals reveal an little increase in the O2Hb concentration that was not observable in previous examination; the 2D pattern shows that a functional response is present since O2Hb increases while CO2Hb is kept at low levels. This changes in the VMR data are in accordance with the clinical evaluation, which reported an improvement in motor and phasic scores.