Biology KS3 & KS4: How humans see

How does your brain create an image of what is around you?

Combining 3D CGI graphics with a real life story, this clip questions what 'sight' really is and where it happens.

What we see is a picture created by our brain based on nerve impulses from our eye.

The story unfolds to show a man who has been blind for 25 years who can now 'see' well enough to climb.

This is a result of a new piece of technology that turns electrical data from a camera into impulses sensed by his tongue.

Using this bit of kit, we seem him climbing and playing with his children.

This clip is from the series Inside the Human Body.

Teacher Notes

Students could use this clip as a good resource to emphasise the role of the brain in sight.

It could be used to stimulate class discussion as well as talking about the way the nervous system can adapt.

It is also a great example of 'How Science Works' putting the technology development in context.

Curriculum Notes

This clip will be relevant for teaching Biology at KS3 and KS4/GCSE in England, Wales and Northern Ireland and National 4/5 in Scotland. Appears in AQA, OCR, EDEXCEL, CCEA, WJEC, SQA

More from Inside the Human Body:

Human circulation
video
Human circulatory and digestive system
video
Human fertilisation
video
Human immunity and defence
video
Pregnancy and multiple births
video
Skin - defend and protect
video
Skin and sweating
video
The human ear
video
The human eye
video
The human heart
video
How humans heal themselves
video