He is a professor at the Salk Institute for Biological Studies,[1] adjunct professor at University of California, San Diego,[2] and member of the advisory board for the Kavli Foundation (United States) Kavli Institute for the Brain and Mind.
He then joined the National Institute of Mental Health as an Intramural Research Fellow in their Laboratory of Neuropsychology.
[1] Currently, John Reynolds runs a lab at the Salk Institute for Biological Studies, where he works on developing models of the visual system, perception, and consciousness.
[1] In his time at the Institute, he has made several landmark discoveries in his field: John Reynolds' more recent work focuses on aging and Alzheimer's disease, like his 2023 study detailing how the failure of mitochondria to produce sufficient energy in brain synapses may cause age-related cognitive decline.
John Reynolds has also participated in artistic collaborations, including serving on the board of the non-profit art project A SHIP IN THE WOODS[14] and supporting David Byrne's immersive optical illusion show "Theater of the Mind.