Hi - 

It appears to me that in the spm_fnirs_calc_hb.m code, the code expects a scalar for source-detector separations (e.g., line 31 will fail with incorrect matrix dimensions if a vector is supplied).

Some of us use caps that allow non-fixed distances between source and detector. I'm wondering if this code could be altered to allow a vector (equal in size to the number of channels) of s-d distances for more accurate Hb calculations per channel.

Best,

Don Rojas