Ralf Haefner

Ralf Haefner is an Assistant Professor in the Departments of Brain & Cognitive Sciences and Physics & Astronomy at the University of Rochester, holding this joint appointment since 2014. His interdisciplinary research bridges neuroscience and physics to investigate computational principles of perception and decision-making.

Education and professional background:

• PhD, Oxford University, 1999
• Visiting Research Fellow, Department of Neurobiology, Harvard Medical School
• Swartz Fellow, Sloan-Swartz Center for Theoretical Neurobiology, Brandeis University

Haefner's research program centers on computational neuroscience, with primary focus on how the brain forms perceptual beliefs and uses them for decisions through Bayesian modeling. He employs machine learning tools to construct mathematical models explaining neural responses and behavior, particularly in the visual domain. His work addresses neural representation of uncertainty, causal inference mechanisms, and probabilistic computation in cortical circuits.

Analysis of recent publications (2023-2025) reveals three dominant trends: (1) causal inference frameworks applied to motion perception and segmentation, (2) Bayesian modeling of perceptual biases and confidence computations, and (3) integration of generative and discriminative neural computations. His work extends beyond traditional neuroscience into scientific methodology through 'Generative Adversarial Collaborations' for improving research discourse.

Honors and Awards:

• Swartz Fellowship, Sloan-Swartz Center for Theoretical Neurobiology
• NSF CAREER Award (2022) for 'Approximate inference at the intersection of neuroscience and machine learning'

Haefner secured significant research funding through his NSF CAREER award, which supports foundational work on probabilistic inference at the neuroscience-ML interface. While specific students aren't listed, his active publication record and lab infrastructure suggest ongoing mentorship of graduate students and postdocs. His research has clinical relevance as shown by studies on perceptual abnormalities in autism spectrum disorder, indicating translational potential for understanding neurological conditions.