Mouse investigation time was also compared to other aspects of human olfactory perception represented by intensity and familiarity ratings (see Materials and Methods): no correlation was found, either with intensity (t 89) = 1.048, p>.05) or familiarity rating (t 89) = .340, p>.05).
Each odorant molecule activates several classes of olfactory cells with varying intensity.
The standard odors of the Sniffin' Sticks test battery (Burghart Instruments) were used to test olfactory performance, hedonic, and intensity ratings.
Of the different parameters of human olfactory perception measured here (hedonic, intensity and familiarity ratings), mouse investigation time thus correlated only with human olfactory pleasantness.
One of two odors (phenylethanol (PEA) or 1-butanol) was presented with one of three conditions (congruent or incongruent symbol, no-symbol), and participants were asked to rate odor intensity and pleasantness during olfactory ERP recordings.
After heat shock treatment, 29% of the probe sets for olfactory receptors showed a change in intensity (18% increased, while 11% decreased) (Table 5).
However, AtraGST and AtraABPX have also been detected, albeit with lower intensity, in all non-olfactory tissues tested (Fig. 5).
In line with this speculation, previous studies have shown that not only the odor quality, but also the odor intensity (odorant concentrations) can influence olfactory preferences [11], [28] [31].
Due to the heterogeneity of previous results, we further investigated cycle phase dependent changes in olfactory performance and also assessed hedonic and intensity scores for n-butanol.
