Education
PhD, Bioengineering — University of Washington
Sep 2021 – present · Seattle, WA
- Advisors: Dr. Gregory Horwitz, Dr. Jacob Yates.
- High-precision digital dual-Purkinje image eye tracking; thalamic visual processing during natural vision.
BS, Electrical Engineering — Stanford University
Sep 2017 – Jun 2021 · Stanford, CA
- Focuses: real-time signal processing, Fourier analysis, machine learning, medical imaging, medical devices.
- Minor in Art Practice.
Research Positions
Graduate Research Assistant — Horwitz Lab, University of Washington
2021 – present
- Developed OpenIrisDPI, an open-source digital dual Purkinje image eye tracker for use with non-human primates.
- High-density electrophysiological study of the macaque lateral geniculate nucleus during naturalistic vision using Neuropixels NHP.
Undergraduate Research Assistant — Otoinnovation Lab, Stanford University
2019 – 2022
- Developed a wearable electrooculography eye-tracking device for diagnosing causes of vertigo. First inventor on pending patent (WO2021141850A1).
- Cellphone-based VR battery of nystagmus tests, signal-extraction and calibration algorithms, Bluetooth SoC and analog front-end evaluation, firmware design.
- Co-authored grants; presented progress and findings to grant review boards.
Summer Intern, Voice Core — T-Mobile
2019
- Designed a full-stack cybersecurity web app that tracked users across telecommunication nodes of the T-Mobile network.
Awards, Fellowships & Grants
- Graduate Research Fellowship — National Science Foundation, 2022.
- Undergraduate Capstone Course Design Award — Stanford University, 2021. Awarded for an OFDM learning tool.
- Terman Award — Stanford University. Awarded to top 30 graduating students in the School of Engineering.
- National Merit Scholarship — National Merit Scholarship Program, 2016.
Talks & Posters
- Ressmeyer, R., Yates, J., Horwitz, G. (2025). Perisaccadic gating of retinogeniculate transmission in awake macaques. Poster, Society for Neuroscience, San Diego.
- Ressmeyer, R., Otero-Millan, J., Horwitz, G., Yates, J. (2025). OpenIrisDPI: An open-source digital dual Purkinje image eye tracker for visual neuroscience. Poster, Eye Movements Gordon Research Conference, Mount Holyoke College.
- Ressmeyer, R., Yates, J., Horwitz, G. (2023). Digital dual Purkinje image eye tracking for precise characterization of visual receptive fields. Oral presentation, Biomedical Engineering Society, Seattle, WA.
- Ressmeyer, R., Yates, J., Horwitz, G. (2023). Digital dual Purkinje image eye tracking enables precise characterization of visual receptive fields in fixating macaques. Poster, Optica Fall Vision Meeting (Seattle, WA) and Society for Neuroscience (Washington, DC).
Mentoring
Aiden Starr — Undergraduate Research Assistant, Horwitz Lab
2024 – present
- Poster: A white noise analysis of neural recordings from macaque LGN. 2025 Hendrickson Trainee Symposium.
- Awarded the Mary Gates Research Scholarship.
Cole Forest — Neuroscience Undergraduate Reading Program, University of Washington
2023
Kayson Hansen — Undergraduate Research Assistant, Otoinnovation Lab
2021
Teaching
- BIOEN 566: Neural Computation and Engineering Laboratory — Teaching Assistant, University of Washington. Winter 2024.
- EE 108: Digital System Design — Teaching Assistant, Stanford University. Fall 2021.