For a given odorant, τf decreases if either the concentration of the odorant or its delivery duration is reduced [ 15].
In general, a single receptor can detect a range of different odorants, and a single odorant can target a range of receptors, with a given odorant being identified through the pattern of receptors that it activates (Hallem and Carlson, 2006).
Thus, for a given odorant, the drif-diffusion model can only encode one parameter of typical food patches, i.e. their size.
RNAi-mediated reduction in expression of a single Obp gene results in altered behavioral responses to multiple, but not all, odorants, and responses to a given odorant are affected by reduced expression of multiple, but not all, Obp genes (Figs 3 and 4).
Activation of Drosophila OR cation channel function by multiple odorants implies that both OR channel function and G-protein signaling are required for optimal responses to a given odor [ 1].
To explain similarities or differences in olfactory performance among or within species, it is appropriate to consider whether given odorants or classes of odorant differ in their degree of behavioral relevance for a species, as discussed by for instance Laska and Seibt (2002a).
Concentration-response data were fit to the equation: I = Imax/(1+ EC50/X n) where I represents the current response at a given concentration of odorant, X; Imax is the maximal response; EC50 is the concentration of odorant yielding a half maximal response; n is the apparent Hill coefficient.
V1r receptor genes in mice exhibit a characteristic not observed in odorant receptor genes: an unusual conservation of non-coding sequences between members of a given family, which includes transcribed and non-transcribed regions [18].
This can be applied to retrieval of all structures for a given functional class, e.g. all odorant molecules, in order to do primary research in a particular domain, e.g. smell perception.
The first step in this process involves the efficient binding of an odorant molecule to a given set of OR.
