JeongJun Park
@JeongjunPark2
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Interested in the neurophysiological and computational mechanisms of cognition. Neuroscience PhD student @WashUMedNeuro
Washington University
Joined February 2020
🚨NEW PREPRINT🚨. Happy to share my PhD work:. Spatial information was consistently represented across tasks in a low-dimensional subspace of PFC activity, while task identity was encoded in an orthogonal subspace, providing a stable and independent representation of context.
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RT @SuhwanGim: Finally,😄 the first project during my Ph.D. program is published in @PLOSBiology. We examined the spatiotemporal brain dynam….
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RT @TrendsCognSci: Understanding cognitive processes across spatial scales of the brain. Review by Hayoung Song (@HayoungSong5), JeongJun P….
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RT @HayoungSong5: Our brain operates at various spatial scales, from local to global. Do they govern different functions?. A broad review o….
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Moving beyond the population doctrine, we suggest that not only a group of cells but also other spatial scales may exhibit novel features not directly expected from smaller scales.
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Excited to share our review paper with @HayoungSong5 and @monicarosenb, now out in @TrendsCognSci🚨!.We propose that each brain spatial scale may uniquely contribute to cognitive functions.
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RT @HayoungSong5: Excited to join the @WUSTLneurosci & CTCN community this fall! I will be exploring computational models of event cognitio….
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RT @PLOSONE: Fascinating sessions this afternoon on #executivefunction disorders and #workingmemory here at #SfN2023- incredible variety of….
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Congratulations @HayoungSong5 !!! This is an impressive finding. I saw the journey you’ve been taking for this. You deserve it.
Out in @eLife! Brain activity travels between a small number of states in a low-d space based on what we are thinking and paying attention to. Cog+sys neuro perspective on how large-scale brain dynamics reflect ongoing thoughts in a variety of contexts.🧠.
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RT @SuhwanGim: Can we predict inter-individual differences in pain using fMRI brain activation patterns? While Hoeppli et al. (2022) argued….
biorxiv.org
In a recent article, Hoeppli et al. (2022) reported that sociodemographic and psychological factors were not associated with interindividual differences in reported pain intensity. In addition, the...
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📢Our paper about prior expectation is finally out in @ScienceAdvances!. Expectation-induced neural modulation in visual area MT accounts for reduced variability in sensorimotor behaviors.
science.org
Expectation-induced neural modulation in visual area MT accounts for reduced variability in sensorimotor behaviors.
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We send immerse thanks to @HayoungSong5 and @steve_lisberger for their feedback and others who helped us!.
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Additionally, the neural state of the MT population represented prior information and its temporal evolution accounted for the dynamic modulation of behavioral variability reduction observed in smooth pursuit initiation. 4/4
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The simulation of a realistic MT population activity demonstrated that this systematic reduction of neural responses accounted for the reduction in behavioral variability observed in the initiation of smooth pursuit eye movement. 3/4
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Prior expectations systematically reduced the MT neural responses in a manner that sharpened the population direction tuning curve only when the sensory evidence was weak. 2/4
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We recorded single neuronal activity from area MT of two rhesus monkeys performing a smooth pursuit eye movement task where the strength of the sensory motion information and prior knowledge of motion direction was controlled. 1/4
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1. Prior expectations enhance behavioral performance by sharpening MT population tuning. 2. Neural signals of prior expectation are present in the neural subspace of MT population activity. 3. MT integrates sensory inputs and prior knowledge based on the reliability of each.
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Excited to share my first first-author preprint, with Seolmin Kim, @HyungGoo_Kim, and my mentor @JoonyeolL. We characterized the neural signature of prior expectations in the sensory cortex. Three main takeaways in 🧵.
Prior expectation enhances sensorimotor behavior by modulating population tuning and subspace activity in the sensory cortex #biorxiv_neursci.
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RT @HayoungSong5: Narrative comprehension entails piecing together its causal structure, with constant switches between external and intern….
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