Table 2. Modulation onset of SS activity of PCs for the three animals: Onset of all modulations of all PCs.
Monkey | Cell group | Mean | SD | n | Range |
M | Mod all | −32.9 | 67.8 | 560 | −150 to 190 |
Mod inc | −19.3 | 79.3 | 252 | −150 to 190 | |
Mod dec | −44.0 | 54.3 | 308 | −150 to 190 | |
S | Mod all | −40.9 | 48.3 | 349 | −150 to 190 |
Mod inc | −35.5 | 39.0 | 137 | −150 to 130 | |
Mod dec | −44.3 | 51.4 | 212 | −150 to 190 | |
W | Mod all | −29.9 | 44.8 | 172 | −130 to 110 |
Mod inc | −23.3 | 48.0 | 69 | −110 to 90 | |
Mod dec | −34.3 | 42.3 | 103 | −130 to 110 |
Most PCs showed modulation for two to eight movement directions. Mod all: all modulations. Mod inc: increases in modulation. Mod dec: decreases in modulation. n: numbers of modulations in individual categories. See also Fig. 6C and D. There was significant difference between Mod inc and Mod dec in monkey M and S (p<0.0003 and 0.002, respectively, Mann-Whitney U-test), but not in monkey W (p<0.13, Mann-Whitney U-test).