Federal Grant Award Summary

The National Institute of Mental Health (NIMH) awarded the University of Texas at Austin a $3.09 million Mental Health Research Grants (CFDA 93.242) project grant for the period July 1, 2026 through June 30, 2030. The research project investigates synaptic plasticity mechanisms that protect and refine local neural circuits, with particular focus on understanding how dendritic spine structure supports learning and memory. The primary deliverables include three-dimensional electron microscopy reconstructions of neural synapses, mechanistic insights into long-term potentiation (LTP) and long-term depression (LTD) processes, and cellular and molecular characterization of how synaptic structural changes resist overwriting during ongoing neuroplasticity. The research will generate peer-reviewed publications, detailed datasets from serial section electron microscopy analyses, and theoretical frameworks explaining the relationship between synapse-specific expansion mechanisms and memory consolidation, particularly regarding spaced versus massed learning paradigms.

The project addresses fundamental gaps in understanding postsynaptic density organization, presynaptic vesicle recruitment, and the recovery intervals following synaptic saturation. Research outputs are anticipated to advance basic neuroscience knowledge of neural circuit refinement and provide mechanistic foundations for understanding how the brain preserves recent learning while continuing to process new information. The award supports research activities conducted at the University of Texas at Austin's Austin, Texas facility, consistent with NIMH's mission to transform understanding and treatment of mental illnesses through rigorous basic and clinical research.