Colour-coded ganglion cells in the goldfish retina: extension of their receptive fields by means of new stimuli

摘要: 1. Receptive fields of colour-coded ganglion cells the goldfish retina were investigated.2. Only a few (5%, Type P) found to be as simple those described by Wagner, MacNichol & Wolbarsht (1960, 1963), with an ;on' response red light in centre, and ;off' green over rather wider area, or vice versa.3. Most (49%, O) also gave peripheral light, periphery, well centre (or versa).4. When small spot was used stimulate periphery O cell, usually not obtained. The organization is such that stimulus large area low intensity (annulus) much more effective than having equal energy high (spot). If only spots are used, cell indistinguishable from P cell.5. Spectral sensitivity measurements show one central process fed primarily red-absorbing cones, other green-absorbing cones rods.6. diameter receptive field whole very large, being 5 mm on retina.7. surrounds, red/green boundaries stimuli, can predicted summing responses components stimulus.8. This type appropriate mediate simultaneous colour contrast. ;opponent colour' previously reported for successive contrast, but contrast.9. component coming masked hidden 14% units (Type Q units). revealed using stimulation, observing after bleaching pigment intense light.