Fast Optical Signal

Definition: Fast optical signal (FOS) (also known as Event-related optical signal (EROS) for the time-locked to particular events) is the signal measured on a time scale ~100ms and it is thought to be related to scattering changes due to neuronal activity: when neurons pass from an inactive state to a hyperpolarized or depolarised state, they cause a change in the scattering of the tissue. FOS are more closely related to neuronal activity than the hemodynamic response.

Category: Physics

Related terms: EROS (Event-related Optical Signal)

Abbreviation or symbol: FOS

Synonym:

References:

https://doi.org/10.3389/fnhum.2010.00052

https://doi.org/10.1016/j.neuroimage.2005.03.006

https://doi.org/10.1162/jocn.1995.7.4.446

https://doi.org/10.1016/j.neuroimage.2010.02.076

Alternative definition:

Related terms (alternative definition):

References (alternative definition):