Freeman Dyson (1923–2020)

Freeman, J

Freeman K-set

Figure 1: A. Topological hierarchy of K-sets, in which (+) means excitation and (means ns inhibition. B. Simulated impulse responses for open loop (interactions are suppressed by anesthesia), mutual excitation (KIe), and negative feedback (KII). C. Experimental open loop impulse response fitted with solution to an ODE representing the dynamics of an ensemble of neurons made non-interactive by a...

Freeman-Sheldon Syndrome

Freeman-Sheldon syndrome (FSS) is a rare inherited form of distal arthrogryposis characterized by craniofacial deformities, camptodactyly with ulnar deviation of the fingers, and talipes equinovarus. Less than hundred cases have been reported till 2010 [1-3]. Multiple surgical interventions are needed to provide an acceptable quality of life. Anesthetic complications occur commonly [4, 5]. We p...

Freeman ’ s Intentional Neurodynamics

William T. Freeman

Image intensity variations can result from several di erent object surface e ects, including shading from 3-dimensional relief of the object, or paint on the surface itself. An essential problem in vision, which people solve naturally, is to attribute the proper physical cause, e.g. surface relief or paint, to an observed image. We addressed this problem with an approach combining psychophysica...