Table 2.

Rank ordering of regional activation levels

PROPVANSniffingConcentration dependence
SeSSeSSeISeS
SeIQupCQup
QupQuaAveSeI
GrSeIGrGr
QuaCmNoCm
CmDBiQua
BiAvePveAve
DCDC
AvePveQuaD
PveGrToPve
ToNoCmTo
CToQupNo
NoBiSeSBi
  • Regional activation was rank ordered. Spearman rank correlations revealed a nonsignificant positive correlation between the regions activated in the odor tasks (PROP and VAN Rho = 0.25;p = 0.38) and a nonsignificant negative correlation between the odor and sniff tasks (PROP and sniff Rho = −0.19,p = 0.5; VAN and sniff Rho = −0.03,p = 0.89). Concentration dependency was positively correlated with both odor tasks (PROP Rho = +0.69,p < 0.02; VAN Rho = +0.64, p < 0.03) but nonsignificantly negatively correlated with sniffing (sniffing Rho = −0.352; p = 0.22). Transformation to Z values revealed that the odorant regions–concentration regions correlation was significantly greater than the sniffing regions–concentration regions correlation (p < 0.01).