Sciencespeaking topic
The lights you see when you press on your closed eyes (phosphenes) don't come from outside: the retina is stimulated by mechanical pressure and the brain interprets it as 'light.' Is seeing in the eye or in the brain?
— phosphenes / mechanical stimulation of the retina
practice with this topic
Set the timer (5-30 min), take 20 seconds of prep if you like, start talking. Jot your thoughts onto the sticky-note board.
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