Table 2.

Distribution of facilitating and depressing units in the Touch condition and the Whisking condition

Cortical layer	PW group		AW group
	Facilitatinga	Depressingb	Facilitating	Depressing
Touch condition
Layer 2/3	9d	24c,d	4	13
Layer 4 barrels	21	8	4	5
Layer 5a	18	10	15	2
Whisking condition
Layer 2/3	6	28	6	10
Layer 4 barrels	17	12	6	3
Layer 5a	20d	7d	14d	2d

^aMean normalized spike count (see Materials and Methods) in cycles 5–10 was >0.

^bMean normalized spike count was <0.

^cSignificantly larger values (binomial distribution, p < 0.05) are marked in bold.

^dUnits that could not be determined as either facilitating or depressing were not included here.