Wohlgemuth, Adolf, b. 1868 · Cambridge, University Press · leaf 36
ed that the rate of the conduction is not very great compared to the velocity of the observed movement), and, as we have seen, the shorter intervals furnish the stronger impulses. The excitation of A^ is therefore stronger than that of any other ^-cell. If the body moves in any other direction,… … Fig. 1. Schema of a centre of optical movement-sensations. a—f and the analogous points are the places at which the fibres from the retinal elements enter the centre. S, E, It, If, are cells representing centres, where the excitations from each of the points mentioned arrive and where they can be…