Posts Tagged ‘eye’

Option E – Neurobiology and behaviour

Monday, January 9th, 2012

Mr Gray Eyes by Tim in sanhazzay on flickr

Here is the syllabus guide for this topic. Option E – syllabus guide

We’ll be using notes and resources from click4biology.  Also these two presentations from Mr Taylor.  E1 and E2.

The first section is all about stimulus and response, so we’ll recap a bit of the nervous system, particularly the stuff on reflex arcs.  We’ll then move on to explain how animal responses can be affected by natural selection.  You need to investigate two examples of this.  You can use the blackcap bird (Sylvia atricapilla) as one, and any other of your choosing.

Moving on to perception of stimuli, we’ll study both the eye and the ear.  You need to be able to label a diagram like this one: Eye diagram We’ll then do a dissection so you can identify the parts properly.

You will also have to:

  • annotate a diagram of the retina to show cell types and direction of light movement
  • compare rods and cones
  • explain the processing of visual stimuli (edge enhancement and contralateral processing)

We’ll then move on to the ear, and you will need to be able to label a diagram and explain how sound is perceived.

 

Eye see!

Monday, May 16th, 2011

Cow eye dissection by Susan Tansil on flickr

We’ll take a look (ha ha) at the structure of the eye, and learn how it captures light waves so that wecan see.

Eye-diagram

We’ll be able to identify the parts by name and also explain their function.  We’ll understand how the eye is like a camera, and we’ll do an eye dissection.

Researching the eye

Monday, April 12th, 2010

Now that we know what about the structure and function of the eye, let’s try and answer these questions:-

  • How do optical illusions (such as Optical Illusions) work?
  • Explain the evolution of the eye.
  • Compare the eyes of predators with those of their prey.
  • What is stereoscopic vision and how does it help animals survive?

Get into groups of 3 or 4.  Each person in your group should choose one question to research and answer.  Spend about 30 mins on this.  Come back together as a group and share your answers with each other.  Once each member of the group has responded, write down at least 2 follow-up questions for each topic, then try and answer those.

Eye see

Thursday, April 8th, 2010

We’ll take a look (ha ha) at the structure of the eye, and learn how it captures light waves so that we can see.  Eye-diagram  We’ll be able to identify the parts by name and also explain their function.  We’ll understand how the eye is like a camera, and we’ll do an eye dissection.

Optical illusions

Wednesday, March 3rd, 2010

Check out lottolab.  Watch the TED video and then play around the site.  There are loads of optical illusions to keep you entertained.

And now get back to your mock revision….Friday 19th March is looming!

How we see, how we hear

Friday, February 12th, 2010
Eye see you! by dotbenjamin on flickr

Eye see you! by dotbenjamin on flickr

We’ll start by looking at the different kinds of receptors that humans have, then focus on the photoreceptors in the eye and mechanoreceptors in the ear.  Click4biology is useful, as is this presentation by Mr Taylor in Bandung.

You need to be able to label a diagram of the eye like this one: Eye diagram

We’ll also do an eye dissection so you can relate the diagram to “reality”.  We’ll compare the different types of photoreceptors that are on the retina, namely rods and cones.  We’ll explain contra-lateral processing (right brain processing information from left eye, and vice versa). And finally we will explain certain kinds of optical illusions by looking at edge enhancement.

We’ll label a diagram of the ear and explain how sound is perceived.  Here are some questions for consideration:-

Why do we have two ears?  What role does the pinna play in other animals? Can fish hear? What range of sounds can the human ear hear? What is a cochlear implant and how does it work?  What does it mean to be tone deaf or have perfect pitch?

Option E – Neurobiology and Behaviour

Tuesday, January 26th, 2010
Mr Gray Eyes by Tim in sanhazzay on flickr

Mr Gray Eyes by Tim in sanhazzay on flickr

Here is the syllabus guide for this topic. Option E – syllabus guide

We’ll be using notes and resources from click4biology.

The first section is all about stimulus and response, so we’ll recap a bit of the nervous system, particularly the stuff on reflex arcs.  We’ll then move on to explain how animal responses can be affected by natural selection.  You need to investigate two examples of this.  Use can use the blackcap bird (Sylvia atricapilla) as one, and any other of your choosing.

Moving on to perception of stimuli, we’ll study both the eye and the ear.  You need to be able to label a diagram like this one: Eye diagram  We’ll then do a dissection so you can identify the parts properly.

You will also have to:

  • annotate a diagram of the retina to show cell types and direction of light movement
  • compare rods and cones
  • explain the processing of visual stimuli (edge enhancement and contralateral processing)

We’ll then move on to the ear, and you will need to be able to label a diagram and explain how sound is perceived.  Here is a good presentation to help you get through all that!