Baylor, Nunn & Schnapf (1987) cynomolgus monkey suction electrode recordings

Data key


  1. Wavelength (nm)
  2. log L-cone sensitivity
  3. log M-cone sensitivity
  4. log S-cone sensitivity


Data from Table 1 of Baylor, Nunn & Schnapf (1987). 5 S-cones, 20 M-cones and 16 L-cones.

Cynomolgus monkey (Macaca Fascicularis).

Suction electrode (current) recordings made with a beam passing transversely through cone outer segments.

The λmax values are 561 nm (L), 531 nm (M), 430 nm (S).


Baylor, D. A., Nunn, B. J., & Schnapf, J. L. (1987). Spectral sensitivity of the cones of the monkey Macaca fascicularis. Journal of Physiology 390, 145-160.