Table 5.
Significance of peak PSFC in 1–10 Hz range based on permutation test
| Permutation Test of Significance During PREMOVE | Permutation Test of Significance During MOVE | Permutation Test of PREMOVE vs. MOVE | Permutation Test of MOVE vs. PREMOVE | |
|---|---|---|---|---|
| Monkey A (4 sessions) | ||||
| Single neuron-LFP pairings (1–10 Hz) | 56/110 (50.9%) | 90/110 (81.8%) | 5/110 (4.5%) | 50/110 (45.5%) |
| SSTSC-LFP pairings (1–10 Hz) | 154/179 (86%) | 176/179 (98.3%) | 6/179 (3.4%) | 139/179 (77.7%) |
| Monkey L (2 sessions) | ||||
| Single neuron-LFP pairings (1–10 Hz) | 16/50 (32%) | 21/50 (42%) | 2/50 (4%) | 9/50 (18%) |
| SSTSC-LFP pairings (1–10 Hz) | 31/93 (33.3%) | 60/93 (64.5%) | 4/93 (4.3%) | 30/93 (32.3%) |
| Monkey P (1 session) | ||||
| Single neuron-LFP pairings (1–10 Hz) | 24/64 (37.5%) | 36/64 (56.3%) | 5/64 (7.8%) | 14/64 (21.9%) |
| SSTSC-LFP pairings (1–10 Hz) | 31/42 (73.8%) | 39/42 (92.9%) | 6/42 (14.3%) | 25/42 (59.5%) |
First and second columns indicate the proportion of pairings (single neuron-LFP and SSTSC-LFP) in which the peak of PSFC in the 1–10 Hz range was significantly larger than 0 (PREMOVE and MOVE epochs) according to a trial-permutation test. See materials and methods for details of the permutation test. These results indicate that significant PSFC in the 1–10 Hz range cannot be explained as an artifact resulting from the simultaneous change in area 2/5 spike rate and low-frequency modulation of the M1 LFP. Third and fourth columns give the proportion of pairings in which the 1–10 Hz peak during PREMOVE exceeded MOVE and the proportion of pairings in which the 1–10 Hz peak during MOVE exceeded PREMOVE, respectively. α-Level was corrected for multiple tests (FDR method) across animals, sessions, channels and epochs.