1 00:00:04,209 --> 00:00:12,210 We can see the next part. That is this part that we see here in the back of your eye. 2 00:00:12,210 --> 00:00:20,210 This is the retina. This is the part of the eye that has special cells that detect colors and light. 3 00:00:20,210 --> 00:00:24,210 So, like this, we can see the colors and the light. 4 00:00:24,210 --> 00:00:31,210 The cone cells detect the colors and the road cells detect the light. 5 00:00:31,210 --> 00:00:46,189 Okay? So, remember that the light passes through the lens and the image is projected upside down here in the retina and here we detect the colors and the light, but with the image upside down. 6 00:00:46,189 --> 00:00:51,189 So the next part and the last one is the optic nerve. 7 00:00:51,189 --> 00:00:58,189 The retina detects the information with the cells, 8 00:00:58,189 --> 00:01:02,189 detects the colors and it detects the light with the cells 9 00:01:02,189 --> 00:01:05,189 and changes this information into electric signals. 10 00:01:05,189 --> 00:01:09,189 Put this information in the nerve, optic nerve, 11 00:01:09,189 --> 00:01:12,189 because it's for the sight, 12 00:01:12,189 --> 00:01:21,189 And the optic nerve sends this information to your brain, so the brain can interpret exactly like this. 13 00:01:21,189 --> 00:01:30,629 We detect the information here with the cone and the road cells, with spatial cells, 14 00:01:30,629 --> 00:01:39,629 and we put this information in the optic nerve that sends the information to your brain. 15 00:01:39,629 --> 00:01:48,049 And the brain, as you can see, puts the image in the correct position, again, ok?