Katie Morrison, Ph.D.
Faculty
Professor & Associate Chair
Education
PhD, University of Nebraska, 2012.
Area of Study: Mathematics, Minor in Electrical Engineering
Thesis: Equivalence and duality for rank-metric and matrix codes
Advisor: Dr. Judy Walker
MS, University of Nebraska, 2008.
Area of Study: Mathematics
BA, Swarthmore College, 2005.
Area of Study: Mathematics and Psychology
Professional Experience & Affiliations
Professor, University of Northern Colorado
Department of Mathematical Sciences (2023 – Present)
Associate Chair, University of Northern Colorado
Department of Mathematical Sciences (2022 – Present)
Associate Professor, University of Northern Colorado
Department of Mathematical Sciences (2017 – 2023)
Assistant Professor, University of Northern Colorado
Department of Mathematical Sciences (2012 – 2017)
Research Associate, Pennsylvania State University
Department of Mathematics (2015)
Research Expertise & Interests
Algebraic Coding Theory
I’m interested in how algebraic and discrete structures can be used to support efficient transmission and storage of information.
Mathematical Neuroscience
I work on mathematics questions arising from theoretical neuroscience, particularly neural network theory and neural coding. I’m interested in applications of linear algebra, abstract algebra, and discrete math.
Publications
- Morrison, K., Degeratu, A., Itskov, V., Curto, C. (2024). Diversity of emergent dynamics in competitive threshold-linear networks. SIAM Journal on Dynamical Systems, 23(1), 855-884.. DOI: https://doi.org/10.1137/22M1541666
- Curto, C., Morrison, K. (2023). Graph rules for recurrent network dynamics. Notices of the American Mathematical Society, 70(4).
- Curto, C., Geneson, J., Morrison, K. (2023). Stable fixed points of combinatorial threshold-linear networks. Advances in Applied Mathematics, 154.
- Parmelee, C., Moore, S., Morrison, K., Curto, C. (2022). Core motifs predict dynamic attractors in combinatorial threshold-linear networks. PLOS ONE, 17, 1-21.
- Parmelee, C., Alvarez, J. L., Curto, C., Morrison, K. (2022). Sequential attractors in combinatorial threshold-linear networks. SIAM J. Appl. Dyn. Syst., 21(2), 1597-1630.
- Curto, C., Morrison, K. (2019). Relating network connectivity to dynamics: opportunities and challenges for theoretical neuroscience. Curr Opin Neurobiol, 58, 11-20.
- Curto, C., Gross, E., Jeffries, J., Morrison, K., Rosen, Z., Shiu, A., Youngs, N. (2019). Algebraic signatures of convex and non-convex codes. J. of Pure and Appl. Algebra.
- Curto, C., Geneson, J., Morrison, K. (2019). Fixed Points of Competitive Threshold-Linear Networks. Neural computation, 31(1), 94-155.. DOI: https://doi.org/10.1162/neco_a_01151
- Burzynski, A., Anderson, S., Morrison, K., Patrick, M., Orr, T., Thelan, W. (2018). Lava lake thermal pattern classification using self-organizing maps and relationships to eruption processes at Kīlauea Volcano, Hawaii.. DOI: https://doi.org/10.1130/2018.2538(14)
- Curto, C., Gross, E., Jeffries, J., Morrison, K., Omar, M., Rosen, Z., Shiu, A., Youngs, N. (2017). What makes a neural code convex? SIAM J. Appl. Algebra and Geometry, 1, 222-238.
- Curto, C., Morrison, K. (2016). Pattern Completion in Symmetric Threshold-Linear Networks. Neural computation, 28(12), 2825-2852.. DOI: https://doi.org/10.1162/NECO_a_00869
- Gluesing-Luerssen, H., Morrison, K., Troha, C. (2015). Cyclic Orbit Codes and Stabilizer Subfields. Advances in Math. of Commun., 9(2), 177-197.
- Morrison, K. (2015). Enumeration of Equivalence Classes of Self-Dual Matrix Codes. Advances in Math. of Commun., 9(4), 415-436.
- Morrison, K., Degeratu, A., Itskov, V., Curto, C. (2024). Diversity of emergent dynamics in competitive threshold-linear networks. SIAM Journal on Dynamical Systems, 23(1), 855-884.. DOI: https://doi.org/10.1137/22M1541666
- Curto, C., Morrison, K. (2023). Graph rules for recurrent network dynamics. Notices of the American Mathematical Society, 70(4).
- Curto, C., Geneson, J., Morrison, K. (2023). Stable fixed points of combinatorial threshold-linear networks. Advances in Applied Mathematics, 154.
- Parmelee, C., Moore, S., Morrison, K., Curto, C. (2022). Core motifs predict dynamic attractors in combinatorial threshold-linear networks. PLOS ONE, 17, 1-21.
- Parmelee, C., Alvarez, J. L., Curto, C., Morrison, K. (2022). Sequential attractors in combinatorial threshold-linear networks. SIAM J. Appl. Dyn. Syst., 21(2), 1597-1630.
- Curto, C., Morrison, K. (2019). Relating network connectivity to dynamics: opportunities and challenges for theoretical neuroscience. Curr Opin Neurobiol, 58, 11-20.
- Curto, C., Gross, E., Jeffries, J., Morrison, K., Rosen, Z., Shiu, A., Youngs, N. (2019). Algebraic signatures of convex and non-convex codes. J. of Pure and Appl. Algebra.
- Curto, C., Geneson, J., Morrison, K. (2019). Fixed Points of Competitive Threshold-Linear Networks. Neural computation, 31(1), 94-155.. DOI: https://doi.org/10.1162/neco_a_01151
- Burzynski, A., Anderson, S., Morrison, K., Patrick, M., Orr, T., Thelan, W. (2018). Lava lake thermal pattern classification using self-organizing maps and relationships to eruption processes at Kīlauea Volcano, Hawaii.. DOI: https://doi.org/10.1130/2018.2538(14)
- Curto, C., Gross, E., Jeffries, J., Morrison, K., Omar, M., Rosen, Z., Shiu, A., Youngs, N. (2017). What makes a neural code convex? SIAM J. Appl. Algebra and Geometry, 1, 222-238.
- Curto, C., Morrison, K. (2016). Pattern Completion in Symmetric Threshold-Linear Networks. Neural computation, 28(12), 2825-2852.. DOI: https://doi.org/10.1162/NECO_a_00869
- Gluesing-Luerssen, H., Morrison, K., Troha, C. (2015). Cyclic Orbit Codes and Stabilizer Subfields. Advances in Math. of Commun., 9(2), 177-197.
- Morrison, K. (2015). Enumeration of Equivalence Classes of Self-Dual Matrix Codes. Advances in Math. of Commun., 9(4), 415-436.
Grants and Sponsored Research
- Jameson, M. (Principal), Lewis, J. (Co-Principal), Karakok, G. (Co-Principal), Morrison, K. (Supporting), “Improving Productive Mathematical Dispositions of Pre-Service Elementary Teachers,” Sponsored by NSF-IUSE Track 1 Level 1, Federal, $299,988.00. (May 1, 2023 – April 30, 2026).
- Morrison, K., “Collaborative Research: Emergent sequences from recurrent network motifs,” Sponsored by National Science Foundation, $319,340.00. (August 2020 – July 2024).
- Morrison, K., “Math + Neuroscience: Strengthening the interplay between theory and mathematics,” Sponsored by The Institute for Computational and Experimental Research in Mathematics. (September 2023 – December 2023).
- Morrison, K. (Co-Principal), Curto, C. (Principal), “Emergent Dynamics from Network Connectivity: A Minimal Model,” Sponsored by NIH BRAIN Initiative, Federal, $1,100,000.00. (September 2016 – June 2019).