Asymmetries in the contributions of On- and Off-mechanisms to the ERG signal
ERG responses were recorded to rapid-on and rapid-off L- and M-cone isolating sawtooth stimuli of different cone contrasts. In addition, the responses were recorded to simultaneous in-phase stimulation of the L- and M-cones at equal cone contrast. Linear responses to mirror imaged rapid-on and rapid-off sawtooth stimuli are also mirror imaged. By adding on- and off-responses, linear response components will cancel and nonlinearities will remain. Because nonlinearities that occur at a certain stage of visual processing will influence subsequent stages, linear response components will probably have an outer retinal origin and nonlinearities probably originate mainly in the inner (post-receptoral) retina.
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| Format: | Digital revista |
| Language: | English |
| Published: |
Pontificia Universidade Católica do Rio de Janeiro
2013
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| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-32882013000200006 |
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