CUED Publications database

Sniff Invariant Odor Coding.

Shusterman, R and Sirotin, YB and Smear, MC and Ahmadian, Y and Rinberg, D (2018) Sniff Invariant Odor Coding. eNeuro, 5.

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Abstract

Sampling regulates stimulus intensity and temporal dynamics at the sense organ. Despite variations in sampling behavior, animals must make veridical perceptual judgments about external stimuli. In olfaction, odor sampling varies with respiration, which influences neural responses at the olfactory periphery. Nevertheless, rats were able to perform fine odor intensity judgments despite variations in sniff kinetics. To identify the features of neural activity supporting stable intensity perception, in awake mice we measured responses of mitral/tufted (MT) cells to different odors and concentrations across a range of sniff frequencies. Amplitude and latency of the MT cells' responses vary with sniff duration. A fluid dynamics (FD) model based on odor concentration kinetics in the intranasal cavity can account for this variability. Eliminating sniff waveform dependence of MT cell responses using the FD model allows for significantly better decoding of concentration. This suggests potential schemes for sniff waveform invariant odor concentration coding.

Item Type: Article
Uncontrolled Keywords: extracellular electrophysiology olfactory bulb psychophysics Action Potentials Animals Body Weight Conditioning, Psychological Drinking Electrophysiology Male Mice Mice, Inbred C57BL Mice, Transgenic Models, Neurological Odorants Olfactory Bulb Olfactory Pathways Rats Rats, Long-Evans Reaction Time Reward Sensory Receptor Cells Smell
Subjects: UNSPECIFIED
Divisions: Div F > Computational and Biological Learning
Depositing User: Cron Job
Date Deposited: 14 Aug 2020 21:26
Last Modified: 04 Mar 2021 03:43
DOI: 10.1523/ENEURO.0149-18.2018