4:41	photo of tectum: do still
	explain insertion of electrode; record layers
		endings from ganglion cells

4:52 	pic of frog and screen
	Audio monitor

10:40 - 13:10 bug detector
14:23 - 15:07

16:45 - 17-38 event detector
19:40 - 20-50

21-40-25:40	dimming detector