Blakemore And Cooper✅

Question 1

Aim:

Answer 1

To test whether kittens raised in an environment of vertical/ horizontal stripes would affect their ability to develop normal vision.

Question 2

What time of experiment?

Answer 2

Lab

Question 3

How long were kittens kept in darkness for when the were birthed?

Answer 3

2 weeks old/ until they were 2 weeks old

Question 4

What were the dimensions of the cylinder?

Answer 4

46cm diameter and 2m long

Question 5

At what height what the Perspex floor in the cylinder?

Answer 5

1m (half way)

Question 6

Description of cylinder interior:

Answer 6

High contrast black and white stripes with Perspex floor so they could see below them

Question 7

What did they do to ensure the kittens couldn’t look up?

Answer 7

Put a cone around their necks (blocking vision)

Question 8

2 controls:

Answer 8

All kittens spent same time in apparatus (5 hours)

When not in the cylinder, they were all in darkness.

Question 9

IV:

Answer 9

Horizontal/ vertical stripes

Question 10

DV: name (4)

Answer 10

• visual reactions
• ability to move
• visual placement
• startle response

Question 11

Results for temporary issues (3):

Answer 11

• move by touch not sight
• failed to move paws when brought close to table
• no startle response

Usually lasted for 10 hours

Question 12

Results: permanent issues(3)

Answer 12

• bumped into stationary objects
• jerky head movements
• poor judgment on movements

Question 13

Conclusions:

Answer 13

• changes in neurons in visual cortex (brain learnt to live in horizontal / vertical world).
• difference in horizontal/ vertical is that neurons changed preferred orientation according to picture (see notes for diagrams)