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Bernstein Seminar | Computational properties of the visual microcircuit

The neocortex is organized around layered microcircuits consisting of a variety of excitatory and inhibitory neuronal types which perform rate-and oscillation based computations. Using modeling, we show that both superficial and deep layers of the primary mouse visual cortex implement two ultrasensitive and bistable switches.
Wann 03.11.2020
von 17:15 bis 18:00
Wo The talk will be held online via Zoom. Meeting ID and password will be sent with e-mail invitation. You can also send an e-mail to ad.aertsen@bcf.uni-freiburg.de for meeting ID and password..
Name
Teilnehmer (Prof. Dr. Gerald Hahn, Center for Brain and Cognition | Department of Information and Communication Technologies | Universitat Pompeu Fabra | Barcelona | Spain )
Termin übernehmen vCal
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Referent/Referentin:
Prof. Dr. Gerald Hahn (Center for Brain and Cognition | Department of Information and Communication Technologies | Universitat Pompeu Fabra | Barcelona | Spain )

Termin:
Dienstag, 03.11.2020, 17:15 Uhr - 18:00 Uhr

Ort:
The talk will be held online via Zoom. Meeting ID and password will be sent with e-mail invitation. You can also send an e-mail to ad.aertsen@bcf.uni-freiburg.de for meeting ID and password..

Termin übernehmen:
vCal iCal

Ausführliche Beschreibung:

The neocortex is organized around layered microcircuits consisting of a variety of excitatory and inhibitory neuronal types which perform rate-and oscillation based computations. Using modeling, we show that both superficial and deep layers of the primary mouse visual cortex implement two ultrasensitive and bistable switches built on mutual inhibitory connectivity motives between SST, PV and VIP cells. The switches toggle pyramidal neurons between high and low firing rate states that are synchronized across layers through translaminar connectivity. Moreover, inhibited and disinhibited states are characterized by low- and high frequency oscillations, respectively, with layer-specific differences in frequency and power which show asymmetric changes during state transitions. These findings are consistent with a number of experimental observations and embed firing rate together with oscillatory changes within a switch interpretation of the microcircuit.

 

 



Interne Verantwortlichkeit:
Bernstein Center Freiburg (BCF)

Kontaktperson:
Name: Prof. Dr. Ad Aertsen
E-Mail: aertsen@biologie.uni-freiburg.de

Webadresse:
https://www.bcf.uni-freiburg.de/events/bernstein-seminar/announcements/201103_Hahn.html

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