Several plant species defend themselves indirectly from herbivores by producing herbivore-induced volatile compounds that attract the natural enemies of herbivores. Here we tested the effects of elevated atmospheric CO(2) (720 micromol mol(-1)) concentration on this indirect defense, physiological properties, and constitutive and induced emissions of white cabbage (Brassica oleracea ssp. capita...

Bank vole pups produce ultrasounds when isolated from the nest, as other rodents do. The present study was intended to elucidate the possible interaction between the social stress of isolation from the mother and the physical stress of low ambient temperature during the nesting period. Although bank vole pups removed from nests and monitored at nest temperature vocalized at high frequency, the ...

Both odor-preference and odor-aversion learning occur in perinatal pups before the maturation of brain structures that support this learning in adults. To characterize the development of odor learning, we compared three learning paradigms: (1) odor-LiCl (0.3M; 1% body weight, ip) and (2) odor-1.2-mA shock (hindlimb, 1 sec)--both of which consistently produce odor-aversion learning throughout li...

Introduction ............................................................................... 192 Odors as Natural Stimuli ................................................................. 192 Physics of Odor Production: Sources of Variation .................................... 195 Spatiotemporal Plume Structure ................................................ 195 Temporal Fluctuations in Active...

Preference is the primary dimension underlying odor perception. Therefore, to understand odor perception it is necessary to understand odor preferences. We propose that preference for an odor is determined by preferences for all objects and/or entities associated with that odor (extending Palmer and Schloss’s (2010) Ecological Valence Theory of color preferences to odor preferences). Odor prefe...

Behavioral analysis is essential to understand how the olfactory system transforms chemosensory signals into information that can be used to guide actions. Recent studies in rodents have begun to address the behavioral relevance of putative olfactory codes and computations including spatial maps, oscillatory synchrony, and evolving temporal codes. To date, these studies have failed to find supp...