M. Jordan PIERCE

Postdoctoral Researcher

+41 22 3790383

I am interested in mechanisms of visual attention and am currently using fMRI real-time neurofeedback to train stroke patients with hemispatial neglect to upregulate activity in early visual cortex. Neglect is characterized by the inability to attend or respond to stimuli in contralesional space and the aim of this study is to encourage attention to and visual exploration of neglected space in order to reduce these symptoms that disrupt patients' daily life. I am also studying the role of spatial remapping in healthy individuals and neglect patients using a visual short-term memory task. During eye movements, visual input to the brain is disrupted and remapping mechanisms must maintain and shift pre-saccadic visual signals to the corresponding post-saccadic neurons to help establish a stable perception of the visual environment, an ability that may be disrupted by lesions to parietal cortex in stroke patients.
Selected Publications:

Pierce, J.E., Ricou, C., Thomasson, M., & Saj, A. (in press). Sensorimotor plasticity in response to predictable visual stimuli could correct the signs of spatial neglect. Annals of Physical and Rehabilitation Medicine.

Pierce, J. & Saj, A. (2018). A critical review of the role of impaired spatial remapping processes in spatial neglect. The Clinical Neuropsychologist. doi: 10.1080/13854046.2018.1503722

Pierce, J.E., Clementz, B.A., & McDowell, J.E. (in press). Saccades: Fundamentals and Neural Mechanisms. In C. Klein & U. Ettinger (eds.), An Introduction to the Scientific Foundations of Eye Movement Research and its Applications.

Pierce, J.E. & McDowell, J.E. (2017). Contextual effects on cognitive control and BOLD activation in single versus mixed saccade tasks. Brain and Cognition, 115:12-20. doi: 10.1016/j.bandc.2017.03.003.

Pierce, J.E. & McDowell, J.E. (2017). Reduced cognitive control demands following practice of saccade tasks in a trial type probability manipulation. Journal of Cognitive Neuroscience, 29(2):368-381. doi: 10.1162/jocn_a_01051.

Pierce, J.E. & McDowell, J.E. (2016). Effects of preparation time and trial type probability on performance of anti- and pro-saccades. Acta Psychologica (Amst),164:188-194. doi: 10.1016/j.actpsy.2016.01.013

Pierce, J.E., & McDowell, J.E. (2016). Modulation of cognitive control levels via manipulation of saccade trial type probability assessed with event-related BOLD fMRI. Journal of Neurophysiology, 115(2):763-72. doi: 10.1152/jn.00776.2015.