Baiwei Liu
@BaiweiLiu
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This person is an AI. But he is still doing a PhD program of cognitive neuroscience. Really weird!!
Joined November 2021
Now out in @ScienceAdvances: @BaiweiLiu and I ask how internal (goal) and external (sensory) selection are coordinated during visual search. The insight: internal and external selection are not necessarily serial, but may develop in parallel in the brain:
science.org
Internal and external selection processes can codevelop in time to yield efficient search behavior.
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The human-neuroscience N2pc marker of covert and internal attention co-occurs with spatial biases in microsaccades, 200-300 ms after prompted to shift attention. How are these empirical phenomena related? Check it out in the latest work led by @BaiweiLiu: https://t.co/FpfKMqGI2O
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🚨We believe this is a major step forward in how we study hippocampus function in healthy humans. Using novel behavioral tasks, fMRI, RL & RNN modeling, and transcranial ultrasound stimulation (TUS), we demonstrate the causal role of hippocampus in relational structure learning.
Causal necessity of human hippocampus for structure-based inference in learning https://t.co/8NY1ltV2XU
#biorxiv_neursci
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Excited to share our paper w/ @Chris_I_Baker in @NatureComms linking active vision & memory! We provide evidence that gaze reinstatement & neural reactivation are deeply related phenomena that jointly reflect the experiences constructed during recall. https://t.co/WK18jVbiUu 1/9
nature.com
Nature Communications - When people recall a movie, their eye movements and brain activity resemble those observed during the viewing. These behavioral and neural reactivations are linked through a...
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Wanna know about sensory & memory representations in visual cortex? After integrating the wisdom from several reviewers (and clever comments from 2 more reviewers at #elife still to go), this paper is now officially out: https://t.co/YJ0xGsjOoF (tweeprint below)
Are memories noisier versions of what we perceive? Fundamentally different? Seriously, think about it… Early visual cortex processes what we see around us, but also has information about images briefly held in mind. The two must be different… but how? TWEEPRINT ALERT! 🚨 🧵1/n
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𝗥𝗵𝘆𝘁𝗵𝗺𝘀 𝗮𝗻𝗱 𝗰𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗶𝗻 𝘁𝗵𝗲 𝗯𝗿𝗮𝗶𝗻 Decoding the rhythmic representation and communication of visual contents https://t.co/rhi49iOySt
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Interested in how the internal and external processes work together to support efficient behaviour?! Check our latest findings where we tracks the internal and external selections simultaneously in a visual search task that relies on both processes
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📢 Check out our (Larissa Behnke, @freekvanede, Kia Nobre, Sage Boettcher) latest preprint on the neural dynamics of returning to an internal focus in working memory after engaging with an interrupting external-attention task. 🧵 below (1|5)
biorxiv.org
In everyday tasks, we must often shift our focus away from internal representations held in working memory to engage with perceptual events in the external world. Here, we investigated how our...
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Temporal structure of experience etched on firing of human hippocampal-entorhinal neurons to serve memory & prediction. See our study @Nature at @UCLANsgy, great work by lead author @PTacikowski with @GuldamlaKalendr & @DavideCili support @NIH_NINDS. https://t.co/4wWzb1N4r5
nature.com
Nature - Single-neuron recordings from intracranial electrodes inserted into human brains for clinical reasons suggest that the temporal structure of human experience is encoded in human...
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Reviewers take note: 57% of people rejected their own argument when they thought it was someone else's. So take it easy with the criticism.
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📢 Check out our (Sage Boettcher, @Chetan_Gohil, @freekvanede, @KiaNobre) latest publication in @PNASNews on the neural dynamics associated with shifting attention within vs. between external and internal attention. (🧵 below) (1|6)
pnas.org
In everyday tasks, our focus of attention shifts seamlessly between contents in the sensory environment and internal memory representations. Yet, r...
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Happy to see this paper finally out now in PBR! @Psychonomic_Soc In it we ask whether statistical learning can occur for unattended items: it is already well known that learning can alter attention, but does attention also alter learning? https://t.co/6mEBLS4h2b
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Putting the 'spotlight' on high-level visual cognition deep down in the brain @TrendsCognSci: https://t.co/hL2NxcSOSn A pleasure to highlight this exciting study by @b_peysakhovich et al., that can be found here:
nature.com
Nature Neuroscience - Neuronal recordings show that primate superior colliculus encodes learned abstract visual categories. The authors demonstrate that it plays a causal role in categorization...
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🚨Two new preprints from the lab! (part 1) Preprint 1: https://t.co/FxHvJya5O1 In this work led by @wangsisi2017, we uncover an underexplored component of visual search by studying how people “look into their memory” to verify (confirm/dismiss) potential visual targets.
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🚨Two new preprints from the lab! (part 2) Preprint 2: https://t.co/NLnrZVPbGU In this work led by @BaiweiLiu, we studied the relation between microsaccades and the N2pc EEG marker of spatial attention, showing how microsaccades strongly modulate but do not cause the N2pc.
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#GazeReinstatement & #NeuralReactivation may be linked through a common process that reinstates past experiences during #MemoryRetrieval! https://t.co/vVyUisyRWS Check out our #Preprint that integrates #EyeTracking into the Sherlock #fMRI Dataset (Postdoc work w/@Chris_I_Baker)!
Neural and behavioral reinstatement jointly reflect retrieval of narrative events https://t.co/FHHWb12gHr
#biorxiv_neursci
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Our latest findings that help appreciate why microsaccades and attention shifts are often correlated but not obligatorily linked: attention shifts do not cause new microsaccades but exclusively bias the direction of microsaccades that happen to be made when shifting attention.
Microsaccades are modulated by covert shifts of attention. A new Article by @BaiweiLiu, Zampeta-Sofia Alexopoulou & @freekvanede shows how shifts in attention bias microsaccade direction without causing new microsaccades. https://t.co/YezzjXBgjI
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Preprint alert👇: @wangsisi2017 and I studied how attentional focusing in working memory benefits long-term memory. Take-home: we show that faster attentional allocation during working memory instils stronger long-term memories, as revealed through gaze:
biorxiv.org
Human working memory serves as a key gateway to the formation of lasting memories in long-term memory. While it is well established how attentional focusing during working memory can prioritize...
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