Number of cells recorded from young (n = 6) and old (n = 6) rats while asleep and during behavior on the rectangular track
| Age | Cell types | No. of complex spike cells | ||||
|---|---|---|---|---|---|---|
| Complex spike cells | Theta cells | |||||
| No. of cells firing during sleep | No. of cells on track (% active) | Firing on track (% total active) | Firing at food locations (% total active) | |||
| Young | 847 | 486 (57.4) | 190 | 354 (72.8) | 132 (27.7) | |
| Old | 590 | 293 (49.7) | 84 | 248 (84.6) | 45 (15.4) | |
F2-a Number of cells with field locations at nonfood locations of the rectangular track versus at food locations on the track.