Mark Plitt

@markplitt.bsky.social

Postdoc @ UC Berkeley | Jane Coffin Childs Fellow | brains, memory, synapses | new(ish) dad | lover of all animal facts

Very exciting to see our work being highlighted by @thetransmitter.bsky.social! Thanks to Natalia Mesa, and as always thanks to our collaborators in the Jayaraman lab!… back to grinding away at reviewer experiments

Yvette Fisher@yvetteefisher.bsky.social · 4w ago

Thank you Natalia Mesa at the @thetransmitter.bsky.social for highlighting our labs preprint on synaptic mechanisms of head direction learning!! 🪰🧭 Work from @markplitt.bsky.social in my lab in collaboration with the Jayaraman lab! www.thetransmitter.org/learning-and...

My final paper from grad school is out! Thank you to @marisosa.bsky.social @ellasay.bsky.social and my co-first author Konstantin Kaganovsky! We show that reward and novelty coding in the hippocampus requires a specific membrane fusion protein implicated in activity-dependent AMPAR mobilization!

Lisa Giocomo@lgiocomo.bsky.social · 4mo ago

New paper! Congrats to @markplitt.bsky.social, Konstantin and team! The brain’s spatial map isn’t static but for hippocampus CA1 maps to change with experience, they need postsynaptic membrane fusion. A new link between synaptic machinery and flexible coding! www.sciencedirect.com/science/arti...

I am incredibly excited and proud to share my first preprint from my postdoc! Thank you to all of the co-authors for all your hard work! Check out the paper for big insights into plasticity mechanisms in navigation circuits! And surprising motifs for inhibitory synaptic plasticity!

Yvette Fisher@yvetteefisher.bsky.social · 8mo ago

*First preprint from our lab* !!!!! How does the brain learn to anchor its internal sense of direction to the outside world? 🧭 led by Mark Plitt @markplitt.bsky.social & Dan Turner-Evans, w/ Vivek Jayaraman: “Octopamine instructs head direction plasticity” www.biorxiv.org/content/10.6... Thread ⬇️

Schematic of how ER-EPG plasticity enables the bump of activity in EPGs to accurately track visual cues. As a fly makes a counter-clockwise turn (top to bottom) it will view visual cues (e.g. the sun) from a new angle and the EPG activity bump (red) will swing clockwise around the network by integrating self motion signals with these visual inputs. When the fly faces a different angle, distinct visual ER neurons are active. Plasticity forms a trough of weak synapses (large circles - strong synapses, small circles - weak synapses) that allow ER neurons with distinct visual tuning to move the EPG bump via disinhibition.