OHSU

Graduate Studies Faculty

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Miranda M. Lim, M.D., Ph.D.

Assistant Professor
Admin Unit: SOM-DOM Pulmonary and Critical Care Medicine
Phone: (503) 220-8262, Ext. 57404
Lab Phone: (503) 220-8262, Ext. 51987
Office: VA Bldg 101, Rm 404A
Mail Code: VA RD42
Programs:
Behavioral Neuroscience
Research Interests:
traumatic brain injury, sleep, arousal, EEG, cognition, dietary therapy, social behavior, translational studies » Click here for more about Dr. Lim's research » PubMed Listing
Preceptor Rotations
Academic Term Available Winter 2014 Maybe Fall 2015 Maybe Summer 2015 Maybe Fall 2014 Maybe Spring 2015 Maybe
Faculty Mentorship
Dr. Lim might be available as a mentor for 2016-2017. Dr. Lim might be available as a mentor for 2014-2015. Dr. Lim might be available as a mentor for 2015-2016.
Profile

Mild traumatic brain injury (TBI) frequently causes persistent sleep/wake disturbances, which are often debilitating and can hinder cognitive rehabilitation. My laboratory studies the neurobiological cascade of events following mild TBI, with the goal of identifying mechanisms underlying sleep/wake disturbances and potential therapies for intervention. To accomplish this, we use chronic in vivo EEG recording, in combination with in vivo microdialysis and animal behavior testing in freely behaving mice. We apply novel computational approaches to the EEG analyses of sleep-wake rhythms to identify signatures unique to TBI, both as a diagnostic tool and a prognostic indicator of outcomes. We recently identified a dietary therapy, composed of branched chain amino acids, which improves wakefulness after brain injury.

The presence of strong social support predicts better clinical outcomes in TBI patients; however the mechanisms underlying this apparent social neuroprotective effect are unknown. A second line of research in my laboratory investigates the role of oxytocin, a neuropeptide hormone that modulates social behavior, as a potential neuroprotective agent in TBI. To accomplish this, we use the prairie vole, a monogamous rodent that forms lifelong pair bonds, as a model of social bonding to study in the role of oxytocin in TBI.