I Want To...
I Want To...
Find Research Faculty
Enter the last name, specialty or keyword for your search below.
School of Medicine
I Want to...
Find a Research Lab
The overall goal of the Auditory Brainstem Library is to understand how abnormal auditory input from the ear affects the brainstem, and how the brain in turn affects activity in the ear through efferent feedback loops. Our emphasis is on understanding the effects of different forms of acquired hearing loss (genetic, conductive, noise-induced, age-related, traumatic brain injury-related) and environmental noise. We are particularly interested in plastic changes in the brain that compensate for some aspects of altered auditory input, and how those changes relate to central auditory processing deficits, tinnitus, and hyperacusis. Understanding these changes will help refine therapeutic strategies and identify new targets for treatment. We collaborate with other labs in the Depts. of Otolaryngology, Neuroscience, Neuropathology, the Wilmer Eye Institute, and the Applied Physics Laboratory at Johns Hopkins, in addition to labs outside the university to increase the impact and clinical relev...ance of our research. view more
Research in the Bakker Memory Laboratory is focused on understanding the mechanisms and brain networks underlying human cognition with a specific focus on the mechanisms underlying learning and memory and the changes in memory that occur with aging and disease. We use a variety of techniques including neuropsychological assessments, experimental behavioral assessments and particularly advanced neuroimaging methods to study these questions in young and older adults and patients with mild cognitive impairment, Alzheimer’s disease, Parkinson’s disease and epilepsy.
Through our collaborations with investigators in both basic science and clinical departments, including the departments of Psychiatry and Behavioral Sciences, Psychological and Brain Sciences, Neurology and Public Health, our research also focuses on brain systems involved in spatial navigation and decision-making as well as cognitive impairment in neuropsychiatric conditions such as schizophrenia, eating disorders, obsessiv...e-compulsive disorders, depression and anxiety. view more
Mitochondrial dysfunction has long been a consistent observation in Parkinson's disease. To understand the consequences of Parkinson's disease causing genetic mutations on the function of mitochondria, the Bioenergetics Core B will provide the following analyses to the projects in the Udall Center at Johns Hopkins: (1) Measuring rates of respiration, oxygen consumption and ATP generation, (2) Measuring calcium dynamics, (3) Measuring reactive oxygen and reactive nitrogen species, (4) Measuring the activity of the electron transport chain enzymes and metabolic enzymes, and (5) Measuring plasma versus mitochondrial membrane potential and mitochondrial membrane permeability
The Brain Science Institute (BSi) brings together both basic and clinical neuroscientists from across the Johns Hopkins campuses. The BSi represents one of the largest and most diverse groups in the university. The BSi's mission is to solve fundamental questions about brain development and function and to use these insights to understand the mechanisms of brain disease. This new knowledge will provide the catalyst for the facilitation and development of effective therapies. The goals of our research are to foster new programs in basic neuroscience discovery; initiate a translational research program that will develop new treatments for brain-based diseases; and encourage collaboration, interdisciplinary teams, and new thinking that will have a global influence on research and treatment of the nervous system.
C. David Mintz Lab
Researchers in the C. David Mintz Lab seek to better understand the specific methods by which anesthesia can impair a patient’s brain development. Recent studies have investigated the ways in which anesthetics interfere with axon guidance in developing mouse neocortical neurons via a GABAA receptor mechanism, as well as the method by which anesthetics interfere with the polarization of developing cortical neurons.
Donald Shaffner Lab
Work in the Donald Shaffner Lab investigates several topics within critical care medicine. Our team conducts research on the mechanisms involved in neurologic injury from global ischemia as a result of cardiac arrest and resuscitation. We also study neurologic outcomes of pediatric patients who experience cardiac arrest.
The Bergles Laboratory studies synaptic physiology, with an emphasis on glutamate transporters and glial involvement in neuronal signaling. We are interested in understanding the mechanisms by which neurons and glial cells interact to support normal communication in the nervous system. The lab studies glutamate transport physiology and function. Because glutamate transporters play a critical role in glutamate homeostasis, understanding the transporters' function is relevant to numerous neurological ailments, including stroke, epilepsy, and neurodegenerative diseases like amyotrophic lateral sclerosis (ALS). Other research in the laboratory focuses on signaling between neurons and glial cells at synapses. Understanding how neurons and cells communicate, may lead to new approaches for stimulating re-myelination following injury or disease. Additional research in the lab examines how a unique form of glia-to-neuron signaling in the cochlea influences auditory system development, whethe...r defects in cell communication lead to certain hereditary forms of hearing impairment, and if similar mechanisms are related to sound-induced tinnitus. view more
Dr. Haughey directs a disease-oriented research program that address questions in basic neurobiology, and clinical neurology. The primary research interests of the laboratory are:
1. To identify biomarkers markers for neurodegenerative diseases including HIV-Associated Neurocognitive Disorders, Multiple Sclerosis, and Alzheimer’s disease. In these studies, blood and cerebral spinal fluid samples obtained from ongoing clinical studies are analyzed for metabolic profiles through a variety of biochemical, mass spectrometry and bioinformatic techniques. These biomarkers can then be used in the diagnosis of disease, as prognostic indicators to predict disease trajectory, or as surrogate markers to track the effectiveness of disease modifying interventions.
2. To better understand how the lipid components of neuronal, and glial membranes interact with proteins to regulate signal transduction associated with differentiation, motility, inflammatory signaling, survival, and neuronal excitab...ility.
3. To understand how extracellular vesicles (exosomes) released from brain resident cells regulate neuronal excitability, neural network activity, and peripheral immune responses to central nervous system damage and infections.
4. To develop small molecule therapeutics that regulate lipid metabolism as a neuroprotective and restorative strategy for neurodegenerative conditions. view more
The APL Health Technologies program's functional restoration focus area includes two portfolios with particular relevance in neurology. The first focuses on motor restoration, using teams with expertise in robotics, microsensors, haptics, artificial intelligence and brain-machine interfaces. One set of projects, currently sponsored by Defense Advanced Research Projects Agency (DARPA) and the Henry Jackson Foundation, centers on a bionic arm technology that integrates with bone and muscle in amputee patients, restoring a variety of normal functions to the patient like cooking, folding clothing, hand shaking, and hand gestures. This portfolio explores direct brain control of the bionic limb, through work led by Dr. Nathan Crone of Johns Hopkins Neurology and Dr. Pablo Celnik of Johns Hopkins Physical Medicine and Rehabilitation. Another set of related work aims to restore motor function by better understanding and using brain signals through brain-machine interfaces. This work is current...ly funded by the National Science Foundation and industry partners. Also in the functional restoration focus area is the vision restoration portfolio. In a partnership with Second Sight and the Mann Fund, the work aims to enhance function of a bionic eye, which couples a retinal implant with a computer vision system to restore vision in blind individuals with retinitis pigmentosa. Current work in the human-machine teaming focus area includes a portfolio that is building artificial intelligence systems that improve radiologic and ophthalmic diagnostics. Another portfolio, currently focused in the surgical setting, enhances the physician's ability to visualize and manipulate the physical world, such as with orthopaedic surgery. view more
Healthy Brain Program
The Brain Health Program is a multidisciplinary team of faculty from the departments of neurology, psychiatry, epidemiology, and radiology lead by Leah Rubin and Jennifer Coughlin. In the hope of revealing new directions for therapies, the group studies molecular biomarkers identified from tissue and brain imaging that are associated with memory problems related to HIV infection, aging, dementia, mental illness and traumatic brain injury. The team seeks to advance policies and practices to optimize brain health in vulnerable populations while destigmatizing these brain disorders.
Current and future projects include research on: the roles of the stress response, glucocorticoids, and inflammation in conditions that affect memory and the related factors that make people protected or or vulnerable to memory decline; new mobile apps that use iPads to improve our detection of memory deficits; clinical trials looking at short-term effects of low dose hydrocortisone and randomized to 28 day...s of treatment; imaging brain injury and repair in NFL players to guide players and the game; and the role of inflammation in memory deterioration in healthy aging, patients with HIV, and other neurodegenerative conditions. view more
Dr. Jantzie, associate professor, received her Ph.D. in Neurochemistry from the University of Alberta in 2008. In 2013 she completed her postdoctoral fellowship in the Department of Neurology at Boston Children's Hospital & Harvard Medical School and became faculty at the University of New Mexico. Dr. Jantzie then joined the faculty Departments of Pediatrics (Neonatal-Perinatal Medicine) and Neurology at Johns Hopkins University and the Kennedy Krieger Institute in January 2019. Her lab investigates the pathophysiology of encephalopathy of prematurity, and pediatric brain injury common to infants and toddlers. Dr. Jantzie is dedicated to understanding disease processes in the developing brain as a means to identifying new therapeutic strategies and treatment targets for perinatal brain injury. Her lab studies neural substrates of cognition and executive function, inhibitory circuit formation, the role of an abnormal intrauterine environment on brain development, mechanisms of neurorepa...ir and microglial activation and polarization. Using a diverse array of clinically relevant techniques such as MRI, cognitive assessment, and biomarker discovery, combined with traditional molecular and cellular biology, the Jantzie lab is on the front lines of translational pediatric neuroscience.? view more
Johns Hopkins Neuromyelitis Optica (NMO) Clinic
The Johns Hopkins NMO Clinic launched in July 2009 and now follows 210 patients with NMO or NMO Spectrum Disorder (last count March 31, 2014), along with 81 patients with idiopathic transverse myelitis, 45 patients with recurrent transverse myeltis and small handful with recurrent optic neuritis. We also follow a few patients with multiple sclerosis who thought they might have NMO.
Until 2005, 90% of NMO patients were misdiagnosed as multiple sclerosis and treated with medications that did not help. We've become much better at identifying NMO and treating it correctly. Whereas 30% of patients used to be blind or paralyzed within 5 years of diagnosis, now > 70% of our patients are remission without any progression of disease using safe medications.
Dr. Michael Levy directs the NMO Clinic and sees NMO patients in clinic every other Monday. He completed the MD/PhD program at Baylor College of Medicine in Houston, TX (where he grew up), and trained in the neurology residency and fe...llowship programs at Johns Hopkins before joining the faculty in 2009. In addition seeing patients with NMO, Dr. Levy also runs clinical trials in NMO (see the clinical trials page) and runs a basic science laboratory devoted to the finding the cure to NMO.
Maureen Mealy, RN, is the program director for the Johns Hopkins Transverse Myelitis Center and the NMO Clinic. Maureen graduated from the University of Maryland and obtained her nursing degree from the Johns Hopkins School of Nursing. She has 7 years of experience in neurocritical care nursing and 6 years of experience working with patients with NMO.
Regina Brock-Simmons, RN, is the clinical coordinator for all of the trials in NMO. While Regina is relatively new to NMO, she has 10 years of experience running clinical trials at Johns Hopkins and is also trained in phlebotomy and infusions. view more
Karen Bandeen-Roche Lab
The Karen Bandeen-Roche Lab explores the application of underlying variable methods in epidemiologic and psychosocial research. Our team seeks to improve the ability to measure key outcomes like functional status and psychological disorders. Our other areas of statistical research include the study of classification and variance structure and multivariate survival analysis. We are deeply invested in the field of gerontology as well as ophthalmology and neurology.
We started Kata to bridge the gap between professional experiential production and neuroscience, clinical neurology, and medical hardware. We strive to build experiences and technology from the ground up, with a focus on mission, and at a level that is consistent with the best productions in the industry. We mirror the thousands of hours that go into a level design in a video game, but with the crucial difference that the focus is on the subtleties required for patient treatment or wellness. Our designs require high-frequency iterative development with patients and users in countless game-play sessions in which they provide crucial feedback. Characters have been painstakingly crafted to elicit profound emotional responses. Some of the requirements for patients or the elderly population in this space are qualitatively different from what is needed in the entertainment marketplace. That said we have also understood the critical artistic similarities.
The core ethos of Kata is that the... challenge of complex movement has profound benefits for cognition, wellness, and brain repair. Specifically, there is growing evidence that complex motor movement can have cognitive benefits that go beyond what has been reported for exercise alone. When designing experiences to treat motor impairments after stroke, maximizing rigorous and dynamic motor input is a requirement. New interactive technologies will allow people to engage in diverse and complex motor movements, even in the home, which was previously impossible.
Overall it has been a very exciting journey, combining art, medicine, technology, and neuroscience. We continue to build, discover, and craft immersive experiences, side by side with physicians, physical therapists, and scientists, with the common goal of pushing clinical care and wellness forward. We believe this is only possible by having a mission focused design group embedded in an academic hospital. Ultimately, we wish to scale and perfect these innovations into other hospitals. Kata is a true hybrid of academia, and industry, doing what neither can do in isolation. We hope the ethos and design philosophy behind Kata provides the impetus for its expansion, partnerships, and growth. view more
Michael Wolfgang Laboratory
The Wolfgang Laboratory is interested in understanding the metabolic properties of neurons and glia at a mechanistic level in situ. Some of the most interesting, enigmatic and understudied cells in metabolic biochemistry are those of the nervous system. Defects in these pathways can lead to devastating neurological disease. Conversely, altering the metabolic properties of the nervous system can have surprisingly beneficial effects on the progression of some diseases. However, the mechanisms of these interactions are largely unknown.
We use biochemical and molecular genetic techniques to study the molecular mechanisms that the nervous system uses to sense and respond to metabolic cues. We seek to understand the neurometabolic regulation of behavior and physiology in obesity, diabetes and neurological disease.
Current areas of study include deconstructing neurometabolic pathways to understand the biochemistry of the nervous system and how these metabolic pathways impact animal beh...avior and physiology, metabolic heterogeneity and the evolution of metabolic adaptation. view more
The Calabresi Lab is located in the department of Neurology at the Johns Hopkins University School of Medicine. Our group investigates why remyelination occasionally fails following central nervous system demyelination in diseases like multiple sclerosis. Our primary focus is on discovering the role of t-cells in promoting or inhibiting myelination by the endogenous glial cells.
The studies of the Functional Neurosurgery Lab currently test whether neural activity related to the experimental vigilance and conditioned expectation toward pain can be described by interrelated networks in the brain. These two psychological dimensions play an important role in chronic pain syndromes, but their neuroscience is poorly understood. Our studies of spike trains and LFPs utilize an anatomically focused platform with high temporal resolution, which complements fMRI studies surveying the whole brain at lower resolution. This platform to analyze the oscillatory power of structures in the brain, and functional connections (interactions and synchrony and causal interactions) between these structures based upon signals recorded directly from the waking human brain during surgery for epilepsy and movement disorders, e.g. tremor. Our studies have demonstrated that behaviors related to vigilance and expectation are related to electrical signals from the cortex and subcortical struc...tures.
These projects are based upon the combined expertise of Dr. Nathan Crone in recordings and clinical management of the patients studied; Dr. Anna Korzeniewska in the analyses of signals recorded from the brain; Drs. Claudia Campbell, Luana Colloca and Rick Gracely in the clinical psychology and cognitive neurology of the expectation of pain and chronic pain; Dr. Joel Greenspan in quantitative sensory testing; and Dr. Martin Lindquist in the statistical techniques. Dr. Lenz has conducted studies of this type for more than thirty years with continuous NIH funding. view less
Epilepsy affects 1-3% of the population and can have a profound impact on general health, employment and quality of life. Medial temporal lobe epilepsy (MTLE) develops in some patients following head injury or repeated febrile seizures. Those affected may first suffer spontaneous seizures many years after the initial insult, indicating that the neural circuit undergoes a slow pathologic remodeling over the interim. There are currently no methods of preventing the development of MTLE. It is our goal to better understand the process in order to slow, halt, and ultimately reverse it.
Our laboratory draws on electrophysiology, molecular biology, and morphology to study the contribution of dysregulated neurogenesis and newborn neuron connectivity to the development of MTLE. We build on basic research in stem cell biology, hippocampal development, and synaptic plasticity. We work closely with colleagues in the Institute for Cell Engineering, Neurology, Neurosurgery, Biomedical Engineering..., and Radiology. As physician neuropathologists our grounding is in tissue alterations underlying human neurologic disease; using human iPSC-derived neurons and surgical specimens we focus on the pathophysiological processes as they occur in patients.
By understanding changes in cell populations and morphologies that affect the circuit, and identifying pathologic alterations in gene expression that lead to the cell-level abnormalities, we hope to find treatment targets that can prevent the remodeling and break the feedback loop of abnormal activity > circuit change > abnormal activity. view more