UH Biocomputation Group - odour source separaionhttp://biocomputation.herts.ac.uk/2021-05-06T11:21:00+01:00Fast Odour Dynamics Are Encoded in the Olfactory System and Guide Behaviour2021-05-06T11:21:00+01:002021-05-06T11:21:00+01:00Maria Psarroutag:biocomputation.herts.ac.uk,2021-05-06:/2021/05/06/fast-odour-dynamics-are-encoded-in-the-olfactory-system-and-guide-behaviour.html<p class="first last">Maria Psarrou's Journal Club session where she will talk about a paper "Fast Odour Dynamics Are Encoded in the Olfactory System and Guide Behaviour"</p>
<p>This week on Journal Club session Maria Psarrou will talk about a paper "Fast Odour Dynamics Are Encoded in the Olfactory System and Guide Behaviour".</p>
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<p>Odours are transported in turbulent plumes, which result in rapid concentration
fluctuations that contain rich information about the olfactory scenery, such as
the composition and location of an odour source. However, it is unclear whether
the mammalian olfactory system can use the underlying temporal structure to
extract information about the environment. Here we show that ten-millisecond
odour pulse patterns produce distinct responses in olfactory receptor neurons.
In operant conditioning experiments, mice discriminated temporal correlations
of rapidly fluctuating odours at frequencies of up to 40 Hz. In imaging and
electrophysiological recordings, such correlation information could be readily
extracted from the activity of mitral and tufted cells the output neurons of
the olfactory bulb. Furthermore, temporal correlation of odour concentrations
reliably predicted whether odorants emerged from the same or different sources
in naturalistic environments with complex airflow. Experiments in which mice
were trained on such tasks and probed using synthetic correlated stimuli at
different frequencies suggest that mice can use the temporal structure of
odours to extract information about space. Thus, the mammalian olfactory system
has access to unexpectedly fast temporal features in odour stimuli. This endows
animals with the capacity to overcome key behavioural challenges such as odour
source separation, figure ground segregation and odour localization by
extracting information about space from temporal odour dynamics.</p>
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<p>Papers:</p>
<ul class="simple">
<li>T. Ackels, A. Erskine, D. Dasgupta, A. Marin, T. Warner, S. Tootoonian, I. Fukunaga, J. Harris, A. Schaefer,
<a class="reference external" href="https://doi.org/10.1038/s41586-021-03514-2">"Fast Odour Dynamics Are Encoded in the Olfactory System and Guide Behaviour"</a>, 2021, Nature</li>
</ul>
<p><strong>Date:</strong> 2021/05/06 <br />
<strong>Time:</strong> 14:00 <br />
<strong>Location</strong>: online</p>