Postdoctoral Research Scientist
About my research
I want to understand the neural mechanisms that transform sensory information into visual perception. My primary research goal is to study how information from our two eyes is used by the brain to construct a 3-dimensional world. Using stereoscopic vision, we can judge accurately the position and size of objects in external space. Our ability to see in depth arises in the cerebral cortex, where the similarity and differences in retinal images are compared and fused to create a single image. While early research suggested that stereopsis arises in the primary visual cortex, we now know that many regions in the visual hierarchy respond to binocular disparity. One critical objective is to understand to which extent different regions participate in stereopsis and binocular visuo-motor tasks.
My main methods are to apply concurrent functional MRI and psychophysics to study the contribution of cortical regions to visual perception. I work with participants with normal vision and volunteers with amblyopia, a condition that causes abnormal stereopsis.
I supervise MSc students and final year undergraduate students for their research projects and give tutorials in psychology and biomedical sciences.
Comparison of Neurochemical and BOLD Signal Contrast Response Functions in the Human Visual Cortex.
Ip IB葉. et al, (2019), J Neurosci
Dynamic Changes in Excitation and Inhibition During the Cortical Response to Visual Contrast in the Human Brain
Ip IB. et al, (2018), PERCEPTION, 47, 560 - 561
Combined fMRI-MRS acquires simultaneous glutamate and BOLD-fMRI signals in the human brain.
Ip IB. et al, (2017), Neuroimage, 155, 113 - 119
Responses to interocular disparity correlation in the human cerebral cortex.
Ip IB. et al, (2014), Ophthalmic Physiol Opt, 34, 186 - 198
Effects of spatial and feature attention on disparity-rendered structure-from-motion stimuli in the human visual cortex.
Ip IB. et al, (2014), PLoS One, 9
Human Brain Activation
Activation to stimuli defined in binocular depth. This image shows a pattern of BOLD-activity (hot spots) displayed on the computationally inflated right hemisphere of an example participant. Visual areas and oculo-motor areas are tagged in bold black letters.