My research mainly focuses on visual perception, action, and their effects on memory. I use a combination of neuroimaging (EEG, fMRI) and brain stimulation (TMS, tDCS, tACS) techniques to investigate these topics. Recently, I am also venturing into the neuroscience of deception and moral reasoning.
My former advisor Bruce Bridgeman and I investigated how actions, such as pointing (finger) and grabbing (entire hand), can alter the way we perceive the visual scene by creating a stronger attentional engagement (a phenomenon originally discovered by Catherine Reed, 2006, and Richard Abrams, 2008). Intending to perform an action also works similarly (Tseng et al., 2010 Perception). The underlying rationale is that perception and action is like a two-way street: seeing something enables us to act precisely with it, while these performed actions constantly change the visual environment around us. Interestingly, this attentional engagement helps people encode more information from a scene, but disappears when one's hand(s) can no longer touch the display (Tseng & Bridgeman, 2011 Exp Brain Res). My good friend (and incredible colleague) Chris Davoli and I together have organized a Research Topic for this hand effect in Frontiers in Psychology, which includes 12 articles from 34 researchers who represent 23 institutions worldwide. For more information, or a free download of the e-book, please take a look at the Frontiers webpage: Taking a hands-on approach: Current perspectives on the effect of hand position on vision.
My postdoctoral work with Dr. Chi-Hung Juan focuses on the use of neuroimaging and stimulation techniques to study visual awareness, visual attention, and visual memory. Specifically, I use transcranial magnetic stimulation (TMS) and transcranial direct current stimulation (tDCS) to modulate neural activities in the parietal cortex to investigate its role in visual working memory. We also combine these neuro-modulation techniques with imaging tools such as fMRI, ERP, and EEG time frequency analysis to uncover the processes behind the behavioral effects of neurostimulation. Recently, we found that anodal tDCS can artificially improve people's performance (at least temporarily) on a visual short-term memory task, but only if these people's natural performance fell below average.
Currently at Taipei Medical University I am continuing these lines of research, as well as exploring some other topics that I have long been interested in. These new topics include driving-safety, usability design, lie detection, moral (and religious) judgment, and the cognitive neuroscience behind these phenomena.
For more detailed information, please visit my lab webpage: http://www.philiptseng.com
You can also visit my research page for more projects: http://gimbc.tmu.edu.tw/index.php?action=research&group=16&author=3&year=