Donna J. Calu, Ph.D.
I graduated from University of Maryland, College Park with an undergraduate degree in Neurobiology and Physiology. I completed my PhD at University of Maryland School of Medicine in Baltimore, working with Geoffrey Schoenbaum to study the role of amygdala neural activity in attention and associative learning processes. As a postdoc in the laboratory of Yavin Shaham at the National Institute on Drug Abuse (NIDA), I used an optogenetic approach to examine the role of medial prefrontal cortex in relapse to palatable food seeking. In 2011, I accepted the unique opportunity to become an Early Independent Scientist.
I started Calu Lab at NIDA in the Behavioral Neuroscience Research Branch with the help of a handful of talented young scientists. There we 1) examined the validity of the food relapse model and 2) established a research program aimed at exploring the neural correlates and brain mechanisms underlying individual differences in reward learning and motivation.
In Fall of 2015, Calu Lab moved when I became an Assistant Professor at the University of Maryland School of Medicine, Department of Anatomy and Neurobiology. We continue our research efforts to characterize the neural circuit basis underlying individual vulnerability to addiction.
Outside of lab life, I get by with a lot of help from my family and friends. I enjoy yoga, biking, walking, dancing, cooking and living with my husband and our two young kids. I enjoy live music, especially that which is improvised and played outdoors.
David Martin, Ph.D.
I completed my undergraduate studies at Louisiana State University, earning a B.S. in Chemistry and a minor in Mathematics. My interests in neuropharmacology led me to the lab of Dr. Charles Nichols at LSU Health Sciences Center, where I developed neuronal sorting approaches suitable for isolating specific neurons from non-genetically modified animals. Using these techniques, I identified genetic responses to 5-HT2A ligands in specific neuronal subtypes of the cortex. As a postdoc in the Calu Lab, I am studying the intertwined mechanisms underlying learning and addiction by using a combination of electrophysiological, behavioral, and pharmacological approaches. In addition to laboratory work, I also greatly enjoy the outdoors through playing soccer, biking, windsurfing, fishing, and skiing.
Dan Kochli, Ph.D.
I graduated from Wittenberg University with a B.A. in Psychology and English before earning my M.A. and Ph.D. at Miami University in Oxford, OH under the guidance of Dr. Jennifer Quinn. There I studied the neurobiology of Pavlovian conditioned fear consolidation, reconsolidation, and extinction at the systems level. I joined the Calu Lab in February 2018 to pursue my interest in motivated behavior and addiction. I am particularly interested in the neural circuits underlying individual differences in behavioral flexibility as they predict vulnerability to addiction. My current project examines the role of basolateral amygdala to nucleus accumbens projections in mediating the behavioral flexibility of sign- and goal-tracking rats following outcome-specific satiety devaluation. Outside of the lab I enjoy reading, tabletop games, and travel.
Sara Keefer, Ph.D.
I became fascinated with research and behavioral neuroscience during my undergraduate studies at Shippensburg University, where I received my B.A. in Psychology with a minor in Biology. During my studies, I became interested in studying appetitive motivation and pursued these interests for my graduate school training with Dr. Gorica Petrovich at Boston College. I studied the role of the basolateral amygdala and its interactions with the medial prefrontal cortex during appetitive learning. My graduate training resulted in a deep appreciation and understanding of the role of how neural circuitries can influence behavior. I joined the Calu lab to further understand the differential engagement of similar circuitries between subjects that display flexible and inflexible appetitive behaviors using a combination of behavioral, electrophysiological, pharmacological, and chemogenetic methods. Outside of research, I spend much of my time with my daughter and husband and enjoy espresso and running sans stroller.
Sam Bacharach, B.A.
I received a B.A. in neuroscience from the University of Virginia in 2013, where I became interested in behavioral neuroscience and the mechanisms of reward learning. Aspiring to do the research that had originally drawn me into the field, I joined the Calu Lab as a post-baccalaureate IRTA fellow at the National Institute on Drug Abuse and used in-vivo electrophysiology in awake behaving rats to examine neural activity in the nucleus accumbens and basolateral amygdala during a reward-unblocking task. My present graduate research in the Calu Lab examines the interaction of dopamine and endocannabinoids in cue-motivated learning in rats. Specifically, I’m interested in how ventral tegmental area endocannabinoid signaling mediates incentive and flexible behaviors in sign- and goal-tracking rats. Outside of the lab, I am an active cellist and perform with several orchestral and chamber groups in the area.
Utsav Gyawali B.A.
I completed my undergraduate studies at St. Mary's College of Maryland with a major in Mathematics and a minor in Neurosciences. At St. Mary's, I worked in the lab of Dr. Anne Marie Brady exploring compulsive cocaine seeking in an animal model of schizophrenia. My interest in learning new techniques led me to join the lab of Dr. Brian Mathur at UMB as a lab manager/research technician. At the Mathur lab, I explored how thalamus intralaminar nuclei controls dopamine release in the striatum and reward related behaviors using optogenetics, chemogenetics, ex vivo electrophysiology, and fast scan cyclic voltammetry. To further my underlying interests in drug addiction, in fall of 2017, I joined the Calu lab. In the Calu lab, I am investigating the role of extended amygdala in incubation of opiate seeking in opiate-dependent and non-dependent animals using behavioral, in vivo electrophysiological, chemogenetic, and pharmacological tools. My interests outside of lab include camping, hiking, playing string instruments, and exploring Baltimore.
Previous Calu Lab Members
Yu-Wei Chen, Ph.D.
Post-Bac Students and Research Technicians
Ellen Lesser, B.A.
Danielle Lafferty, B.A.
Kimberly Fiscella, B.A.
Sam Bacharach, B.A.
Alex Kawa, B.S.