Table 2.

Response metrics

Metric	X, w/o LED	X, w/LED	Y, w/o LED	Y, w/LED	P value*
Onset response latency (n = 44; 24 X, 20 Y)	66.1 ± 8.0 ms	47.9 ± 4.8 ms	61.5 ± 7.6 ms	44.4 ± 6.6 ms	0.0006
First spike time SD (n = 23; 12 X, 11 Y)	27.3 ± 7.9 ms	24.3 ± 7.0 ms	31.6 ± 0.9 ms	25.2 ± 2.5 ms	0.002
c50 (n = 49; 26 X, 23 Y)	56.2 ± 2.7%	57.1 ± 4.2%	34.2 ± 3.3%	33.6 ± 3.6%	0.8
Preferred SF (n = 33; 18 X, 15 Y)	0.22 ± 0.03 cycle/°	0.23 ± 0.03 cycle/°	0.21 ± 0.02 cycle/°	0.20 ± 0.01 cycle/°	0.3
Preferred TF (n = 37; 19 X, 18 Y)	6.7 ± 0.7 Hz	7.4 ± 0.7 Hz	14.3 ± 2.2 Hz	14.0 ± 1.9 Hz	0.3
TF max firing rate (n = 37; 19 X, 18 Y)	13.7 ± 0.5 spikes/s	14.7 ± 0.5 spikes/s	14.1 ± 0.5 spikes/s	16.6 ± 0.8 spikes/s	0.04
TF norm. max. firing rate (n = 37; 19 X, 18 Y)	0.95 ± 0.01 spikes/s	1.0 ± 0.08 spikes/s	0.98 ± 0.01 spikes/s	1.28 ± 0.13 spikes/s	0.04
TF magnitude (n = 37; 19 X, 18 Y)	12.0 ± 1.2	14.5 ± 1.6	15.9 ± 1.5	22.6 ± 2.9	0.02

LGN physiology data from 6 of 11 experimental animals. max, maximum; norm, normalized; SF, spatial frequency; TF, temporal frequency; w/, with; w/o, without.

^*Statistical comparisons are of all recorded LGN neurons (X and Y) across LED conditions because the sampled LGN subpopulations showed similar effects. Refer to figure legends for statistics for within-subpopulation comparisons (X alone, Y alone) across LED conditions.