Fig. 3.

(a) Light-induced scattering signals in rod outer segment (ROS) suspensions. The wavelength of the recording light beam was $\sim 700\mathrm{nm}$. The upper trace shows a rhodopsin signal from washed disks induced by a visible light flash. The middle trace shows the binding signal in the absence of guanosine triphosphate (GTP). The lower trace shows the dissociation signal in the presence of GTP. The vertical scale is the relative transmitted intensity change. (b,c) Light-induced scattering signals in isolated retinas. (b) Angular dependence of the light scattering (LS) response to a visible light flash. Signals were recorded from retinas 1 (left) and 2 (right) within the indicated intervals of the scattering angle (0); overall periods of measurement were 125 min (retina 1) and 91 min (retina 2). Each set of signals was scaled for equal peak amplitudes (normalized). Each set of responses includes a second control measurement at a single angular interval (bottom row: 3 deg to 6 deg and 6 deg to 10 deg, respectively, for retinas 1 and 2); the period between the first and second measurements at this interval was 290 min. (c1) Effects of a low-${\mathrm{Na}}^{+}$ medium on light scattering (LS) changes (left) and electroretinography (ERG) (right) responses. Simultaneous responses recorded before, during, and after superfusion with a low-${\mathrm{Na}}^{+}$ medium. Labels identify the times of recording and the switching of the superfusion medium. (c2) Flash responses recorded before (top traces), during (middle traces), and after (bottom traces) background illumination. (a) Reprinted with permission from Ref. 100. (b,c) reprinted with permission from Ref. 59.