Marion Greenup

Former vice president of administration
Simons Foundation

Marion Greenup joined the Simons Foundation in 2007 as senior vice president of administration and provided support for The Transmitter since its inception. She has a Master of Public Health from Columbia University and a Master of Arts in Education in Early Childhood Development from Tulane University. Previous positions included administrative roles at the NYU Child Study Center, Columbia University Health Sciences, and the Department of Pediatrics. She also served as senior vice president of education and health promotion at the March of Dimes.

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Neural dynamics

By Alex Williams

17 August 2026

7 min read

Two trajectories cross over each other showing areas of alignment and misalignment.

Mind over metrics: How can we tell if two brains (or AI models) are alike?

The ability to record from large populations of neurons has triggered the development of myriad methods for comparing them. But we’re still grappling with how to convert measures of likeness into a better mechanistic understanding.

Neural dynamics

Mind over metrics: How can we tell if two brains (or AI models) are alike?

By Alex Williams

17 August 2026 | 7 min read

This paper changed my life

By Noelia Weisstaub

14 August 2026

5 min read

Mice playing, engaged in learning and memory: some of their brains are yellow, and some are red, matching a red and yellow legend that runs through the image to underscore both memory and learning.

This paper changed my life: A technical breakthrough for memory studies

In a 2007 Science paper, Mark Mayford and his colleagues found that some neurons activated during learning are also recruited during memory retrieval. Noelia Weisstaub shares how this study and others drove an era of great progress in tool development.

This paper changed my life