Table 1.

Number of PFC neurons sensitive to each category scheme and trial interval

Category scheme ACategory scheme BBoth schemes
Sample presentation32 of 536 (6.0%)21 of 536 (3.9%)13 of 536 (2.4%)
Memory delay36 of 536 (6.7%)37 of 536 (6.9%)19 of 536 (3.5%)
Both intervals22 of 536 (4.1%)9 of 536 (1.7%)6 of 536 (1.1%)
Sub: 38 of 536 (7.1%)
Switched interval11 of 536 (2.1%)
Total90 of 536 (16.8%)67 of 536 (12.5%)49 of 536 (9.1%)
  • Switched interval refers to neurons whose preferred interval changed from the sample presentation in one category scheme to the memory delay in the other category scheme or vice versa.