Kwok Lab Meetings

[Group meeting agenda]

Kwok Lab holds lab meetings on 15:45 p.m. every Thursday. You can join the meeting via this link, or enter the Zoom meeting ID number 4426821255.

New preprints

July 19, 2022

Our group member, Lei Wang, just published his new preprints, Mixed selectivity coding of content-temporal detail by dorsomedial posterior parietal neurons, on bioRxiv.

Check the graphic abstract below and you can check for an interactive intersection diagram by clicking on the graphic abstract.

Demonstration for dmPPC cell ensembles for their mixed selectivity coding

We revealed a set of neural codes of ‘neuroethogram’ in the primate parietal cortex. Analyzing neural responses in macaque dmPPC to naturalistic videos, we discovered several groups of neurons that are sensitive to categories of ethogram-items and to low-level sensory features. The amount of information coded within these multiplex representations in turn increases our trained classifier decodability for different video-types. We further discovered that the processing of category and feature information by these neurons is sustained by accumulation of temporal information over a long timescale, corroborating its role at the apex of the cortical hierarchy of temporal receptive windows. Taken altogether, these neural findings explain how dorsomedial PPC weaves fabrics of ongoing experiences together in real-time and realize a multiplex representation of an organism’s past. The high dimensionality of neural representations should motivate us to shift the focus of attention from pure selectivity neurons to mixed selectivity neurons, especially in increasingly complex naturalistic task designs.

New preprints

June 27, 2022

Our group member, Diogo Santos-Pata, just published his new preprints, Theta oscillations in the human hippocampus normalize the information content of episodic memory, on bioRxiv.

The preprints’ results are important as they suggest the brain dynamically adapts its intrinsic frequencies to the information it needs to process. It also further contributes to our understanding of how brain waves organize and associate the objects surrounding us.
In future work, the research team expects to be able to control brain waves of people with memory deficits such as dementia and Alzheimer’s patients in order to improve their cognitive capabilities.

Our Postdoc will attend PCN 2022

April 25, 2022

Our team postdoc research fellow Lei Wang has been admitted to attend the International Summer School for Primate Cognitive Neuroscience 2022 at the Gustav Stresemann Institut, Germany from July 24 to August 5, 2022. The Summer School is organized by the German Primate Center in Göttngen and is sponsored by the German Research Foundation.

DKU News about Our New Paper

June 11, 2022

Duke Kunshan University (DKU) published the news about our new paper as the title: Human brains run multiple systems in memory, DKU study suggests, on their homepage.

New preprints on metacognition

December 29, 2021

Our lab has two recent preprints on metacognition. Led by Yudian Cai, we applied TMS on the monkeys dlPFC and found a critical role of Brodmann Area 46d (BA 46d) in supporting metacognition without implicating task performance (see preprint Cai, Jin, Zhai et al.). In another study, we applied TMS on human angular gyrus and linked the AnG to gauging vividness efficiency, but not meta-confidence, of memory, thereby differentiating the monitoring of vividness from confidence (see preprint Zou & Kwok).

New preprints

December 29, 2021

Our team (led by Zhiyong Jin) contributed to a worldwide-effort project studying the phylogenetic basis of short-term memory in the primate (see preprint). This represents our continual support to collaborative open science in primate cognition research, see this.

Consortium on ManyPrimates

Oxford Open Neuroscience

November 11, 2021

Oxford Open Neuroscience will publish rigorous and broad interest papers and research into the nervous system in both health and disease, encompassing basic, translational, and clinical research. Interdisciplinary work and technology advancement are also welcomed. The journal publishes scientific research of the highest quality, rigour and significance, as well as reviews, commentaries and debates. In addition to original research, Oxford Open Neuroscience welcomes theoretical, technical and methodological papers within any field of neuroscience.

With its broad scope, the journal aims to represent the whole neuroscience community, with a focus on diversity in all aspects of leadership, decision making, and authorship. As such, Oxford Open Neuroscience is run by a representative group of subject specialists, rather than a single Editor-in-Chief, meaning that decisions regarding policy, strategy, and development include the views and perspectives of a broad range of scientists in our community.

New Membership in Memory Disorders Research Society (MDRS)

October 6, 2021

Dr Sze Chai Kwok just got elected as a new member into the Memory Disorders Research Society (MDRS). The MDRS a by-invitation-only professional society dedicated to the study of memory and members are engaged in basic and clinical research into how memory works and why it breaks.


Editorial Advisory Board for Oxford Open Neuroscience

October 6, 2021

Dr Sze Chai Kwok is pleased to be joining the Editorial Advisory Board for Oxford Open NeuroscienceOxford Open Neuroscience is a new, top-quality journal from Oxford University Press publishing high-interest research and reviews across all aspects of neuroscience.


Our Group Members’ Talks at The 2nd Annual Meeting of CNLM

August 1, 2021

Dr Sze Chai Kwok and six of our group members attended The 2nd annual meeting of the basic and clinical branch of learning and memory of Chinese society of Neuroscience, which was held by CNS from July 30th, 2021 to August 1st, 2021 in Qingdao, China.

Dr Lei Wang, Xufeng Zhou, Chenxi Zhai, Xuanlong Zhu, Jiaona Tong and Mingfeng Cao made their poster talks on the first day and got many inspiring feedbacks.

Photos in below and check for the poster by clicking their name. Prosit!

  • Kwok Lab
  • Dr Lei Wang
  • Xufeng Zhou
  • Chenxi Zhai
  • Xuanlong Zhu
  • Jiaona Tong
  • Mingfeng Cao

Jiangsu Qinglan Talent Program Award

June 24, 2021

Dr Sze Chai Kwok has been selected for a Jiangsu Qinglan Talent Program Award from 2021 to 2024, by Jiangsu Education Department.


Academic Seminar Guest in Zhejiang University

June 18, 2021

Dr Sze Chai Kwok was invited by Dr Anna Wang Roe and Dr Xiongjie Yu to give a talk on our recent work entitled “Elucidating Functional and Anatomical Profile of the Medio-Posterior Parietal Cortex during Naturalistic Paradigms in Nonhuman Primate”.

After the seminar, Dr Anna Wang Roe (front row, left), Dr Xiongjie Yu (front row, right), Dr Gang Chen (back row, right), Dr Xiaodong Chen (back row, left) and Sze Chai exchanged ideas about their recent works and future plans.

Hope we can have more collaborations!

Yudian Cai’s Talk at ASSC 24

June 15, 2021

Yudian Cai’s submission was selected as a short talk in the meeting of The 24th meeting of the Association for the Scientific Study of Consciousness (ASSC). He presented his latest work with the title “Functional and cortical morphometric basis of metacognitive introspection in Old World monkeys (Macaca mulatta)”.


Yunxuan Zheng’s Talk at ASSC 24

June 15, 2021

Yunxuan Zheng’s submission was selected as a short talk in the meeting of The 24th meeting of the Association for the Scientific Study of Consciousness (ASSC). He presented his latest work as the title “Posterior parietal cortex neurons distinguish memorized past from what is perceived as reality”.

For the video recording, see below.


Academic Seminar Guest in BNU

March 31, 2021

Sze Chai Kwok was invited by Dr Gui Xue, who worked as a professor in the Center for Brain and Learning Sciences at Beijing Normal University (BNU), to give a talk on our recent works.

Decoded Neurofeedback Toward Bias and Racism Mitigation (2021-2022)

January 23, 2021

Dr Sze Chai Kwok was selected for a Bass Connections project by Duke University with co-PI James Moody.

This project’s goals are to understand the neural basis of ingroup bias through advanced functional neuroimaging; validate the effectiveness of decoded neurofeedback on the downregulation of neural representation underlying ingroup bias; developing a proof-of-concept protocol for clinical applications; extend fMRI decoded neurofeedback methods to “modulate” racial biases, and raise public awareness that biases could be modulated.

For more details, please visit this page.

New Abstract Accepted as Poster Presentation in 2021 Cosyne

January 23, 2021

We have got an abstract accepted as a poster presentation in 2021 Cosyne:

Zuo SWang LJin Z, Kusunoki M, Zhou Y-d, Kwok SC (2021) Primate PPC neurons track the passage of time and orchestrate for successful temporal order memory. Cosyne 2021 #214.


National Merit Scholarship

November 6, 2020

We congratulate Lei Wang for being awarded a prestigious National Merit Scholarship for PhD studies (ranked 2nd). Here is the news on the college website.

Nengda Scholarship

November 6, 2020

We congratulate Yudian Cai for being awarded a prestigious Nengda Scholarship for PhD studies (ranked 4th). Here is the news on the college website.

NSFC General Program Grant

September 18, 2020

The lab has been awarded a 4-year National Natural Science Foundation of China (NSFC) General Program grant to study “Domain-specificity of metacognition and its neural substrates”. 

DKU News about Our New Paper

September 3, 2020

Duke Kunshan University (DKU) published the news about our new paper as the title: Out of sight, but not out of mind, on their homepage.

New Article out in Behavioural Brain Research

September 3, 2020

Our group member, Lei Wang, just published his new article, Fallacious reversal of event-order during recall reveals memory reconstruction in rhesus monkeys, in Behavioural Brain Research.

Editorial Board

June 28, 2020

Sze Chai has accepted an invitation to join the Editorial Board of the journal Cognitive Processing (Springer).

Young IBRO Regions Connecting Award

June 28, 2020

Sze Chai has been selected for a Young IBRO Regions Connecting Award, with co-applicant Eduardo A. Garza-Villarreal of Universidad Nacional Autónoma de México.

Academic Seminar Guest in Zhejiang University

June 5, 2020

Sze Chai Kwok was invited by Dr Shaomin Zhang, who worked as a professor in the Institute of Brain-machine Interface of Zhejiang University, to give a talk on our recent works.

More details are in the poster below.

Lei Wang’s Talk in Neuromatch 2.0

June 5, 2020

Lei Wang’s submission was selected as a short talk in Neuromatch 2.0. He presented his latest work on how precuneus neurons code for content and temporal information in macaques. 

(Link:, starting at 13’00”)

NYU Shanghai News about Our New Paper

May 21, 2020

New York University Shanghai (NYU Shanghai) published the news about our new paper as the title: New study finds evidence for memory replay phenomenon in macaque monkeys, on their homepage.

Campus News about Our New Paper

May 8, 2020

Our university, East China Normal University(ECNU), released the news about our new paper: Behavioral evidence for memory replay of video episodes in the macaque on the WeChat official account. For the whole news, see here.

Review Editor

April 15, 2020

Sze Chai Kwok accepted the invitation to serve as Review Editor for Frontiers in Human Neuroscience.

New Open Research Fund

March 22, 2020

We are granted a new Open Research Fund by the State Key Laboratory of Cognitive Neuroscience and Learning (Beijing Normal University) to study metacognition with Xiaohong Wan as host investigator at BNU.

New Preprint out on BioRxiv

February 18, 2020

Our group member, Yunxuan Zheng, just published his new preprint article, Diffusion property and functional connectivity of superior longitudinal fasciculus underpin human metacognition, on BioRxiv.

Lab visit to Beijing Normal University and Peking University

December 7, 2019

Our group made a whirlwind trip to BNU and PKU on 5th-6th December 2019, and over a 2-day window, participated in three joint group meetings with Professor Liang Luo’s lab (BNU), Professor Xiaohong Wan’s lab (BNU), and Professor Yuji Naya’s lab (PKU). Over 8 presentations and discussions, we have covered an array of topics ranging from cognitive and neural components of metacognition, associative nature of MTL neurons, to the importance and hands-on wisdom in running a sustainable NHP lab. We also had the privilege in paying visits to the nonhuman primate facilities on both campuses.

Our group in BNU
Our group in PKU

Two presentations at the 42nd Annual Meeting of the Japan Neuroscience Society 

July 24, 2019

Lei Wang and Shuzhen Zuo will each give an oral presentation in NEURO2019 to be held from July 25th to 28th in Niigata, Japan.

Their abstracts can be found here and here.

NYU-ECNU Neuro Institute Retreat in Qiandao Lake

July 14, 2019

We are giving four poster presentations at the NYU-ECNU Neuro Institute Retreat in Qiandao Lake, China on 15-16 July 2019. Lei Wang will speak on his ephys data on putative memory traces in the posteromedial parietal cortices; Yudain Cai will speak on his probability distribution modelling work on task preparation time in macaques; Futing Zou will present her latest data on the role of angular gyrus in giving rise to a sense of vividness during memory retrieval, and Xinming Xu will present his work on how the precuneus is implicated during chronological order judgement.  Their respective posters can be found here: [Wang et al., Cai et al., Zou et al., and Xu et al.].

Sze Chai will chair one of the sessions and will give a talk on the neurophysiology of hippocampus-independent memories and temporal-order judgement in the macaque posterior parietal cortex on 15th July 2019.

Our presence at CNS 2019

Two of our lab members are going to present at this year’s Cognitive Neuroscience Society (CNS) Annual Meeting in San Francisco.

Qun Ye is going to present Task-independent abstraction of episodic context in parietal cortices.

Xinming Xu will talk about Reconstructing real-life event sequences with schema-based knowledge.