I am working with the neuropixel data using the brain observatory module. I found the gaze tracking data through using session.get_pupil_data(suppress_pupil_data=False) on EcephysSession object and I got four different kind of measurements with different value ranges (below I am showing these ranges for session 750749662):
raw_screen_coordinates in cm
x_range 373 y_range 448
raw_screen_coordinates_spherical in deg
x_range 80 y_range 112
filtered_screen_coordinates in cm
x_range 67 y_range 86
filtered_screen_coordinates_spherical in deg
x_range 24 y_range 32
(ranges are calculated by max coordinate - min coordinate)
non of which matches the dimensions of the monitor (53.3*30.0 cm ) and viewing angles (120° x 95° ) provided in the white paper, except for ‘raw_screen_coordinates_spherical in deg’ but with reversed x and y dimensions.
I’m wondering what do these different measurements mean and how are they calculated.
Thank you very much !