Johann Bollmann
@JohannBollmann
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Neuroscientist | UniFreiburg | Neural circuits of vision and motor control
Freiburg/Germany
Joined September 2022
Happy our paper on corollary discharge in the #zebrafish visual system is out! Locomotion modulates visual processing via synchronous synaptic inhibition. Great work Ahsan, Katharina, Steffy and Chintan! @Katha_Lis @fishymusings @BUnifr @NatureComms
https://t.co/iEg5qbpVII
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I was recently asked by German newspaper ‘Der Tagesspiegel’ (Berlin): „Why do some people get goosebumps when chalk scrapes on chalkboard?“. This is the column😊: https://t.co/qsSuKC6bLk
tagesspiegel.de
Wer kennt sie nicht, die schaurige Kindheitserinnerung an das Kratzen der Kreide an der Tafel im Klassenzimmer?! Ein Neurobiologe erklärt, warum ausgerechnet dieses Geräusch bei so vielen Menschen...
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Delve into #ScientificHistory and explore a multimedia presentation of "100 Years of #SignallingResearch in Freiburg": A special exhibition at the #Uniseum celebrates the discovery of the #SpemannMangoldOrganiser, opening 17.10.2024, 3:15 pm! More here: https://t.co/AGtYrtICCw
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Excited to share a new preprint form the lab: https://t.co/ckMay6hfnz
@Rubinstein21547 #Neuroscience #zebrafish
biorxiv.org
In goal-directed behavior animals select actions from a diverse repertoire of possible movements. Accurately quantifying the complete behavioral repertoire can uncover the underlying rules that guide...
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Last week, the #spemannmangold2024 symposium took place @UniFreiburg. It was an honour to contribute to an event with such amazing guests! Together with an upcoming exhibition, it links the 1924 discovery of an 'organiser' to current signalling research. ➡️ https://t.co/plYsbcMHAC
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QS @worlduniranking : Universität Freiburg ist unter den Top 10 in Deutschland. National belegt die #UniFreiburg im Bereich #Nachhaltigkeit Platz 4. https://t.co/M1LySgfwEZ
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I am happy to share our recent study published in Nature Comm on hippocampal interneuron circuits governing the representation of novelty in mice. doi: 10.1038s41467-024-44882-3
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I wrote a few thousand words about the cerebellum for @CurrentBiology … check it out if you’d like to learn more about “the little brain”
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Congrats! Intriguing results: inhibitory corollary discharge in mouse superior colliculus! Fascinating homologies to recently found inhibitory synaptic CD signals in zebrafish optic tectum (=superior colliculus in fish). @biorxiv_neursci
https://t.co/Xl2HnRpUrl
nature.com
Nature Communications - How the visual system differentiates between external motion and sensory input arising from self-motion is poorly understood. Here, the authors investigate how motor-related...
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Warum wird die Sehumgebung trotz Augen- und Körperbewegung stabil wahrgenommen? #Neurowissenschaftler*innen um Prof. Dr. @JohannBollmann identifizieren Signale im Gehirn von Zebrafischlarven, die die Aktivität von #Nervenzellenwährend der Bewegung hemmen. https://t.co/DyJb1Sz6Xs
Happy our paper on corollary discharge in the #zebrafish visual system is out! Locomotion modulates visual processing via synchronous synaptic inhibition. Great work Ahsan, Katharina, Steffy and Chintan! @Katha_Lis @fishymusings @BUnifr @NatureComms
https://t.co/iEg5qbpVII
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Note this year's Hermann Staudinger Lecture by Edvard I. Moser at FRIAS, University of Freiburg. 12. December 2023. Looking forward to it. Thanks @FRIAS_UFreiburg @bartos_marlene @UniFreiburg
https://t.co/nvSQePjVG7
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A synaptic corollary discharge signal suppresses midbrain visual processing during saccade-like locomotion This is the direct link: https://t.co/Xl2HnRpUrl
nature.com
Nature Communications - How the visual system differentiates between external motion and sensory input arising from self-motion is poorly understood. Here, the authors investigate how motor-related...
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Beautiful work: population of place cells discovered in the larval zebrafish telencephalon. @rolilab A population code for spatial representation in the larval zebrafish telencephalon
biorxiv.org
The vertebrate telencephalon is the site of complex cognitive processes, such as spatial cognition. The larval zebrafish telencephalon is a compact circuit of only ∼10,000 neurons that contains...
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The optic tectum from a new angle: A Synaptic Corollary Discharge Signal Suppresses Midbrain Visual Processing During Saccade-Like Locomotion 7/7
biorxiv.org
In motor control, the brain not only sends motor commands to the periphery, but it also generates concurrent internal signals known as corollary discharge that influence the processing of sensory...
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Having reported key findings at conferences for some time now (e.g. the wonderful #cshlzebrafish 2019 and #NeuroZF2022), we are happy we can now make available the full story on motor-related signaling in this visual pathway as a preprint on @biorxiv_neursci 6/n
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We are excited as we were able to identify a synaptic corollary discharge signal in a key visual center in the brain of larval #zebrafish: The optic tectum, a major visual processing area in many species, receives synaptic inhibition every time there is motor output. 5/n
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This class of signals, called 'corollary discharge' or 'efference copy', is the subject of intense research because it tells us something about how we perceive the world as stable and how we take the sensory consequences of our own actions into account when planning actions. 4/n
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