Table 4.
Comparison of discharge patterns in subdivisions of area 4 during coLead.
| 4δc (N = 114) | 4γFL (N = 60) | 4γHL (N = 58) | 4δr (N = 55) | |
|---|---|---|---|---|
| Modulated | 46 (40%) | 55 (92%) | 47 (81%) | 30 (55%) |
| Modified | 84 (74%) | 58 (97%) | 57 (98%) | 50 (91%) |
| N: coLead | 68 (60%) | 55 (92%) | 51 (88%) | 42 (76%) |
| HL | 15% | 7% | 41% | 10% |
| FL–HL | 40% | 11% | 41% | 12% |
| FL(all) | 40% | 70% | 16% | 62% |
| Pre-FL | 4% | 6% | 2% | 17% |
| FL(SR) | 31% | 58% | 16% | 38% |
| FL(SA) | 9% | 11% | 0% | 24% |
Characteristics of the cell discharge in different subdivisions of area 4, including the number and percentage of modulated and modified (task-related) cells together with the number in which discharge was modified during coLead. For the latter, we indicate the percentage of cells discharging at different phases of the step cycle during the coLead condition, as illustrated in Fig. 4A for the population recorded in area 4δc. The cells discharging during the period of activity of the forelimb are divided into those that were SR and those that were SA, as in Fig. 4A. Pre-FL indicates cells in which discharge activity ended < −0.2 step cycle before coClB/Br onset.