Photosonix Stimulation Glasses Photosonix stimulation glasses and all you wanted to know about the choices. All glasses are to be used with the eyes closed unless otherwise specified. The cord to the electronics unit should be long enough that you can lean back in a chair without pulling the system off the table. A very flexible cord is nice.
Many glasses have the internal electronics riveted to the glasses.
A single rivet in the center, the weakest point of the glasses, leads to early breakage. Photosonix glasses use two rivets offset from the center, avoiding the weak spot. Enclosed is information on both light sources, however. Their switching performance degrades rapidly above 15 Hertz or so. Incandescent bulb glasses are usually made with a translucent shield over the bulbs, allowing the glasses to be used with the eyes open.