The reduction of masking in the presence of red light was then assumed to reflect reduced input from the magnocellular system.
All manipulations are per formed in dim red light.
A small red light and buzzer mounted above the centre of the screen were used to centre infants' attention between trials.
We noticed the red light over the door go on.
Following dark adaptation, an eye was removed, hemisected, and mounted in a recording chamber under dim red light.
Participants were to press the button signaled by a red light (the target button for that trial) as soon as possible.
In the dark-adapted state all surgery and the electrode placements were done under dim red light.
I can see how this might work for a small localised patch of red light with clear contours.
