Stimulus and network dynamics collide in a ratiometric model of the antennal lobe macroglomerular complex.

ABSTRACT: Time is considered to be an important encoding dimension in olfaction, as neural populations generate odour-specific spatiotemporal responses to constant stimuli. However, during pheromone mediated anemotactic search insects must discriminate specific ratios of blend components from rapidly time varying input. The dynamics intrinsic to olfactory processing and those of naturalistic stimuli can therefore potentially collide, thereby confounding ratiometric information. In this paper we use a computational model of the macroglomerular complex of the insect antennal lobe to study the impact on ratiometric information of this potential collision between network and stimulus dynamics. We show that the model exhibits two different dynamical regimes depending upon the connectivity pattern between

SUBMITTER: Chong KY 

PROVIDER: S-EPMC3254609 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature