Table 1.

Latency, peak magnitude, and orientation selectivity of responses to different contexts and modes in which stimulus enters RF of V1 neurons

		Response Peak			Late Response
Condition (color used in figures)	Response Latency, ms	Peak Time, ms	Normalized amplitude	Orientation selectivity	Amplitude	Orientation selectivity
Flash-on-Gray (black)	35 ± 8	50 ± 8	1	0.35 ± 0.3	0.43 ± 0.2	0.40 ± 0.3
Flash-on-Picture (blue)	36 ± 8	52 ± 9	0.92 ± 0.2	0.43 ± 0.3	0.35 ± 0.2	0.51 ± 0.3
Sac-on-Gray (magenta)	42 ± 10	57 ± 10	0.85 ± 0.2	0.33 ± 0.3	0.33 ± 0.2	0.35 ± 0.3
Sac-on-Picture (green)	46 ± 13	64 ± 13	0.59 ± 0.2	0.47 ± 0.3	0.30 ± 0.2	0.42 ± 0.3
Sim-Sac on Picture (red)	44 ± 12	65 ± 14	0.70 ± 0.2	0.57 ± 0.3	0.37 ± 0.2	0.55 ± 0.3

Values are means ± SD. All amplitudes, including those of the late response phase, are expressed relative to the Flash-on-Gray peak amplitude. Values in first 4 rows were obtained from our entire sample of 74 recording sites. Values in last row come from a subset of that sample, with 42 recording sites. RF, receptive field.