Flashcards
Blakemoore & Cooper
Cards in this deck (10)
- 1Blakemoore & Cooper AREA?Biological area - brain plasticity.
- 2Blakemoore & Cooper AIM?To investigate physiological + behavioural effects of a limited visual experience in kittens, and whether brain development/plasticity occurs due to nurture rather than nature.
- 3Blakemoore & Cooper RESEARCH METHOD?Lab experiment.
- 4Blakemoore & Cooper RESEARCH DESIGN?Independent measures design.
- 5Blakemoore & Cooper IV?Whether kittens raised in a horizontal or vertical environment.
- 6Blakemoore & Cooper DV?Whether kittens in horizontal condition could detect vertically aligned objects (and vice-versa).
- 7Blakemoore & Cooper SAMPLE?- Kittens.
- Studied from birth.
- Randomly assigned to conditions.
- 1 kitten from each kitten used to test neurophysical effects. - 8Blakemoore & Cooper PROCEDURE?- New born kittens placed in dark room.
- 2 weeks, randomly placed in condition for 5 hours.
- Glass platform inside tall cylinder w/ horizontal/vertical black-and-white lines.
- Visual field restricted to 130 degrees w/ wide black collar - prevents seeing own body.
- 5 months, ended + kittens placed then placed for several hours a week in a lit furnished room.
- DV then measured - whether kittens could detect objects in opposite alignment to what they were exposed to - visual reactions observed
- 7 1/2 months, 1 kitten from each had their neurophysiology examined. - 9Blakemoore & Cooper RESULTS?- All extremely visually impaired - showed no visual placing (table) + no startle response (thrusted object)
- Pupillary reflexes normal
- All showed behavioural blindness (no detection of objects of opposite alignment to previous environment)
- Recovery of some deficiencies - after 10 hours showed visual placing + some startle response (easily jump from chair to floor).
- Some permanent damage - e.g. trying to touch objects beyond reach.
- Neurophysical examination - horizontal/vertical plane recognition cells not triggered in kittens - unable to perform orientation selectivity so suffered from physical blindness.
- Distributions of preferred orientation were abnormal. - 10Blakemoore & Cooper CONCLUSIONS?- Brain development affected by early experiences + environment rather than just genetics.
- Clear evidence of brain plasticity so visual experiences have serious perceptual consequences.
- Environment can determine perception at both behavioural + physiological levels (in kittens)
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- Cue cards summarising key info % stats of Blakemoore & Cooper's study into brain plasticity.
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- Jessica Callister
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