Oliver Vikbladh

Oliver Vikbladh

@vikbladh

Followers573
Following1.2K

Daw lab @NYU PhD candidate interested in the #hippocampus and reinforcement learning. Soon post doc at UCL.

NYC
Joined on July 12, 2018
@vikbladh Statistics

We looked inside some of the tweets by @vikbladh and found useful information for you.

Inside 100 Tweets

Time between tweets:
8 days
Average replies
3
Average retweets
35
Average likes
82
Tweets with photos
25 / 100
Tweets with videos
5 / 100
Tweets with links
0 / 100
Fun Fact

The average business has 14,709 Twitter followers.

Our paper about the hippocampal contributions to model-based planning and spatial memory in humans, is now out. What a journey! Particularly grateful for our incredible collaborators and the participants who made this study possible. @NeuroCellPress

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Super thrilled to share our years of work on human replay with the world, now out in Cell @CellCellPress, https://www.cell.com/cell/fulltext/S0092-8674(19)30640-3 … with my amazing supervisors: @behrenstimb @zebkDotCom and Ray Dolan. @WCHN_UCL @MPC_CompPsych @OxfordWIN @DeepMindAI (1/16)

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Quoted @jaaanaru

Decoding sequential replay with fMRI. Big congrats @nico_schuck who demonstrates the importance of sequential reactivation in the human hippocampus for nonspatial decision-making and establishes the feasibility of investigating such rapid signals with fMRI https://science.sciencemag.org/content/364/6447/eaaw5181 …

super thrilled, honored and frankly excited to say that our paper on hippocampal replay of non spatial task states has been published in @sciencemagazine today!! tldr:hippocampal replay cares about task states+might help OFC learn them. fun teamwork with the amazing @yael_niv

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Preprint: Value-based framework for understanding cooperation. Starting from neuroeconomic models of decisions and proposing directions for research focusing on memory, attention and social interaction!
https://psyarxiv.com/bkn3j 
w. @TessaShussmy @diegoareinero  @jayvanbavel

Preprint: Value-based framework for understanding cooperation. Starting from neuroeconomic models of decisions and proposing directions for research focusing on memory, attention and social interaction! https://psyarxiv.com/bkn3j  w. @TessaShussmy @diegoareinero @jayvanbavel

Quoted @NeuroCellPress

Testing patients with hippocampal damage, @vikbladh et al. demonstrate that planning & place memory both rely on the hippocampus https://www.cell.com/neuron/fulltext/S0896-6273(19)30123-0 … Preview by Iigaya & O’Doherty https://www.cell.com/neuron/fulltext/S0896-6273(19)30384-8 …

"Hippocampus Is What Happens while You’re Busy Making Other Plans". But if you're not too busy making other plans you should check out Iigaya & O’Doherty's fantastic Preview of our recent paper exploring the role of the hippocampus in planning. @nathanieldaw @NeuroCellPress

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A role for the medial temporal lobe subsystem in guiding prosociality: the effect of episodic processes on willingness to help others
https://academic.oup.com/scan/advance-article/doi/10.1093/scan/nsz014/5365293 …

"Our willingness to help may be guided, in part, by how easily we can construct imagined and remembered helping episodes"
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A role for the medial temporal lobe subsystem in guiding prosociality: the effect of episodic processes on willingness to help others https://academic.oup.com/scan/advance-article/doi/10.1093/scan/nsz014/5365293 … "Our willingness to help may be guided, in part, by how easily we can construct imagined and remembered helping episodes"

Excited to share our new paper in @PNASNews exploring how information about duration is incorporated into human hippocampal (and CA1) long-term sequence representations:

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Quoted @biorxiv_neursci

Single-neuron representations of spatial memory targets in humans http://biorxiv.org/cgi/content/short/523753v1 … #biorxiv_neursci

New lab preprint on human single neurons that represent to-be-remembered spatial locations.

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"Reward retroactively prioritizes memory for objects closest to the reward" in humans https://go.nature.com/2A6SKKS  New paper from Daphna Shohamy lab at Columbia!

"Reward retroactively prioritizes memory for objects closest to the reward" in humans https://go.nature.com/2A6SKKS  New paper from Daphna Shohamy lab at Columbia!

Given how flexible our attitudes can be, we should be more humble about the attitudes we hold, and this might be a long term recipe for depolarization. Wrote something for Scientific American together with @jayvanbavel

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A multi-echo multi-band fMRI protocol with 7T vs. 3T leads to 200-300%  improvement in tSNR. This helps to uncover differences in VTA-seed FC between depressed patients & healthy controls. Very promising work by 
@JMurrough's group. https://www.biorxiv.org/content/early/2018/11/09/459479 …
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A multi-echo multi-band fMRI protocol with 7T vs. 3T leads to 200-300% improvement in tSNR. This helps to uncover differences in VTA-seed FC between depressed patients & healthy controls. Very promising work by @JMurrough's group. https://www.biorxiv.org/content/early/2018/11/09/459479 …

Our new #bioRxiv preprint examining allocentric boundary and goal direction coding in the human entorhinal cortex and subiculum is now online: http://biorxiv.org/cgi/content/short/466789v1 … @josepedrovh @WolbersLab @DZNE_en

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Current mood #SfN18

Current mood #SfN18

san diego at last! fyi if you are also here and dont have plans for monday, @evanrussek and I are presenting at a great cross-species nanosymposium on Goal Directed Behavior. I’ll show fMRI data on Episodic Memory as a mechanism for Model-Based Planning.https://www.abstractsonline.com/pp8/#!/4649/session/727 …

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Excited to share our new preprint with Marc Howard, "Predicting the future with multi-scale successor representations". Mathy, but we've tried to give intuitive explanations of equations. Would love to hear thoughts!
https://www.biorxiv.org/content/early/2018/10/22/449470 …
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Excited to share our new preprint with Marc Howard, "Predicting the future with multi-scale successor representations". Mathy, but we've tried to give intuitive explanations of equations. Would love to hear thoughts! https://www.biorxiv.org/content/early/2018/10/22/449470 …

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Big Nature Neuroscience day for us: @marcelomattar's fab theory of place cell replay came out https://rdcu.be/9Pjq  with a kind N&V from @john_widloski & David Foster http://goo.gl/FtdDE6 , and (coincidentally) a piece from me about how it all started https://rdcu.be/9Plt 

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Fast-backward replay of sequentially memorized items in humans. Paper on replay in working #memory out in @eLife

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Hippocampal State Transitions at the Boundaries between Trial Epochs http://biorxiv.org/cgi/content/short/443077v1 … #biorxiv_neursci

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Quoted @valentinwyart

Then, by measuring the consistency of human decisions across repeated sequences of rewards, we validated that most of learning noise is due to random variance rather than to systematic biases – in other words, a misfit of our RL model. 6/16

Then, by measuring the consistency of human decisions across repeated sequences of rewards, we validated that most of learning noise is due to random variance rather than to systematic biases – in other words, a misfit of our RL model. 6/16

New insights concerning the exploration/exploitation trade-off using a paradigm inspired by @nathanieldaw 's 2006 paper in which we included a complete feedback condition to reduce the need for direct exploration

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