Figure 2
From: Cortical BOLD responses to moderate- and high-speed motion in the human visual cortex
(a) Timeline of experiment illustrating the two types of moving-gratings used to stimulate the cortex. These stimuli have identical contrast envelopes (50%) and temporal frequency (10 Hz), differing only in speed and spatial frequency by a factor of 14. For more details see Materials & Methods section (b and c). Psychophysical contrast sensitivity functions for participant S8 for fast (b) and moderate-speed (c) stimuli, presented over 60 degrees of visual field (filled symbols), and confined to 30–60 degrees of visual field eccentricity (open symbols). Data were binned every 0.2 log-units. Solid lines show fits to filled dots (full field), whereas dashed lines show fits to open dots (peripheral field).
