Hebb, 1949.

Grinvald, A. et al. 'Cortical point-spread function and long-range lateral interactions revealed by real-time optical imaging of macaque monkey primary visual cortex'. Journal of Neuroscience, 14, 2545–68 (1994). Cohen, L B. et al. Changes in axon fluorescence during activity: molecular probes of membrane potential'. Journal of Membrane Biology, 19, 1–36 (1974). Waggoner, A. S.&Grinvald, A. 'Mechanisms of rapid optical changes of potential sensitive dyes'. Annals of the New York Academy of Sciences, 303, 217–41 (1977). Waggoner, A. S. 'The use of cyanine dyes for the determination of membrane potentials in cells, organelles and vesicles'. Methods in Enzymology, 55, 689–95 (1979). Fluhler, E, Burnham, V. G.&Loew, L. M. 'Spectra, membrane binding and potentiometric responses of new charge shift probes'. Biochemistry, 24, 5749–55 (1985). Ebner J. J.&Chen, G. 'Use of voltage-sensitive dyes and optical recordings in the central nervous system'. Progress in Neurobiology, 46, 463–506 (1995). Fromherz, P.&Lambacher, A. 'Spectra of voltage-sensitive fluorescence of styryl-dyein neuron membrane'. Biochimica et Biophysica Acta, 1068, 149–56 (1991).