Three University of Maryland researchers will receive approximately $5.3 million in new federal support for research that is part of a larger project designed to radically improve our understanding of the connection between brain activity and human behavior
Their multi-institution U19 project team is composed of computational and systems neuroscientists, physicists and engineers. Other institutions with investigators involved in the project include NIH’s National Institute of Mental Health, the New York University School of Medicine, the Universidad Nacional de San Martin in Argentina, and the Instituto Italiano di Tecnologia.
“This multi-university multi-disciplinary project is quite unique, timely, and exciting: not only does it lie in the intersection of several converging technologies in high-dimensional neural recording and modulation, but it is also grounded in close and intimate collaboration of several teams of experimentalists and theorists,” said Babadi.
Their project aims to revolutionize our understanding of brain function by providing a unifying account of how brain activity and behavior are mutually informing. Currently, research tends to examine the complex interaction of brain activity and behavior as separate problems, but the U19 team examines how these two elements operate simultaneously: how the external world shapes the patterns of brain activity, how brain activity results in the manifestation of behavior, how the elicited behavior in turn reshapes the brain, and so on. In other words, the project provides a clearer picture of the brain in real time.
In the past, neuroscience has mapped what happens in the brain based on particular sensory inputs (neural code) and has studied how the different parts of the brain “read” the information contained in the neural activity in order to form behaviors like decision-making (readout).
The U19 team’s research considers these two fields in tandem. They offer a unified explanation for the dynamic dialogue between neural code and readout—namely, how the brain simultaneously performs coding and readout in order to translate sensory input into behavior and to adapt its internal activity to the behavioral context. Brains “read” the information contained in the neural activity in order to form behaviors like decision-making (readout).
To address this, the U19 team integrates various theoretical and experimental approaches, particularly single-cell resolution imaging, to further control and guide behavior by manipulating brain activity, with a focus on the three senses of vision, audition, and olfaction.
UMD’s Losert is leading the “Data Science Core,” which aims at streamlining and centralizing the data collection, analysis, and experimental design seamlessly across the various scientific projects. Kanold heads the science project titled, “Determining which Neurons Contribute to a Particular Behaviorally Distinguishable Percept,” with the goal of establishing causal links between neural activity and behavior. Babadi is in charge of neural modeling, statistical data analysis, and model-based experimental design for the three science projects. He is also contributing data science tools to the Data Science Core.
The collaborative nature of this project is crucial to investigating the complex relationship between the brain and behavior, the researchers said, as it requires a tight integration of state-of-the-art optical imaging and stimulation, cellular electrophysiology, theoretical modeling, and large-scale data analysis. The U19 team’s unifying framework, which accounts for the simultaneous operation of neural code and readout, will allow the broader neuroscience community to resolve ongoing debates regarding neural coding that have been previously stymied by considering only half of the problem.