Academic Profile

Academic Profile

Asst Prof Xu Hong

Assistant Professor, School of Social Sciences

Email: xuhong@ntu.edu.sg
Asst Prof Xu Hong

Biography
Dr. Hong XU is currently an assistant professor of Psychology in the School of Social Sciences since 2009. She received her B.S. in Psychology from Peking University, M.S. in Statistics and Ph.D. in Psychology from University of Chicago. Her research interests include neural mechanisms of visual perception and its applications in real life and human-centric AI systems.
Research Interests
Dr. Hong XU's area of expertise is in vision perception and neuroscience. She studies visual perception through a multidisplinary approach: psychophysics, electrophysiology (EEG), eye tracking, virtual reality (VR), and computational modeling. In particular, she studies face perception and self-motion heading perception and wayfinding by asking the following questions:

1.Visual Perception
How do we visually perceive objects (e.g., signage, faces) in daily activities (e.g., self-motion) and how is the visual perception affected by our previous visual experience (e.g., adaptation and implicit learning)?

2. Human-computer interaction
What is the basis of effective design in visual displays? How does our visual system analyze large amount of data/information in a short period of time? What kind of optimization process is involved? Furthermore, what is the role of attention and eye movement in this process?

3. Computational modeling
How to model the hierarchical information processing system in neural networks? How is visual information transferred from low level to high levels? How does the feedback system work synergistically with the feedforward system?
Current Projects
  • CRETON
  • Effect of audiovisual emotional signals on wayfinding
  • Effect of distorted face adaptation on facial expression judgment - an investigation of internal crowding effect on adaptation between expanded and contracted faces
  • Evaluation of Human Factors in Wayfinding System
  • Evaluation of Human Factors in Wayfinding within MRT/LRT Transit Areas
  • Human Factors Study in the On-Board Unit (OBU) Design
  • Multisensory Integration in Face Perception - An Investigation of Visual and Auditory Interaction
  • Neural correlates of facial expression adaptation as revealed by event-related potentials
  • Research into impacts of new generation electronic road pricing (ERP-2) system
  • Serviceability (Crowdedness, Comfort and Weather Protection) of Commuter and Bus Infrastructure Adjoining MRT Stations
  • Speed Safety Threshold for Bicycles and Personal Mobility Devices (PMDs) and Enforcement Review
  • Study on the Acceptable Reflectance Level Of Body Wrap and Paintwork on Road Vehicles
  • The Importance of Stimulus Size and Type in the Effect of Crowding
  • The role of spatial relationship among facial feature in holistic face perception
  • Walking-cycling Demand Model at Neighbourhood Level
  • Ways to improve commuters' emotions and perceptions towards train disruptions through better train disruption management methods
Selected Publications
  • Ying H.J., Burns E.J., Lin X.Y., and Xu H. (2019). Ensemble statistics shape face adaptation and the cheerleader effect. Journal of Experimental Psychology: General, 148(3), 421-436.
  • Xu H., Sou K., and Burns E. (2018, November). Neural correlates of facial emotion perception with alexithymia and autistic traits. Paper presented at Society for Neuroscience (SfN), San Diego, CA, USA.
  • Burns E.J., Tree J., Chan A.H.D., and Xu H. (2018). Bilingualism shapes the other race effect. Vision Research, S0042-6989(30145-7), doi: 10.1016/j.visres.2018.07.004.
  • Burns E, Murray E, Bennetts R, Bate S, Chan A, and Xu H. (2018). Journal of Vision, 18 (10),: Neural origins of cuteness perception and caregiving motivation: evidence from developmental and acquired prosopagnosia. Vision Science Society (VSS) (pp. 920-920)USA: Association for Research in Vision and Ophthalmology (ARVO).
  • Sou K.L., and Xu H. (2018). Journal of Vision, 18 (10),: Short exposure duration reveals a smooth transition from priming to adaptation. Vision Science Society (VSS) (pp. 609-609)USA: Association for Research in Vision and Ophthalmology (ARVO).

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