Cognitive Development (W17)

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  • Cognitive Development
    • Prenatal: Between conception and birth (266 days/38 weeks)
      • 1. Zygotic Stag (0-2weeks) 100 cells across 2 layers: skin, hair, NS, organs & digest, respir systems
        • 2. Embryotic Stage (2-8weeks) heart beat, brain function, body shape
          • Androgens (Bring about sexxing of baby)
          • 3. Foetal Stage (8weeks-birth)
            • Foetal Learning: automatic, involuntary motor or sensory responses
          • Most susceptible to teratogens
            • Teratogens: birth defects
      • Infancy Stage (0-2 years)
        • Swift neural damage recovery due to elasticity of brain
          • Grey matter: blood vessels & neutrons
            • White matter: nerve fibres
              • Myelination: nerve fibres are coated in myelin, assisting nerve impulses to fibres
                • Essential for basic motor behaviour- the PONS & CEREBELLUM
              • Frontal and Parietal lobe develops 12-16years
                • Occipital lobe: up to 20years old
              • Mature the earliest: entorhinal cortex & piriform cortex
            • Peaks just before adolescence
        • Myelination: nerve fibres are coated in myelin, assisting nerve impulses to fibres
          • Essential for basic motor behaviour- the PONS & CEREBELLUM
        • Rozenweig: rats raised in enriched encironmetnshad thicker cerebral cortex, better bloody supply, more protein content and more acetylcholine
          • Acetylcholin: trasmission substance that is imperative for learning.
          • Skeels - Children who stayed in orphanage had less brain maturation than those who went into insititutions
            • Fujioka et al - Children who play instruments have better activation when hearing instruments - musical training can influence the brains ability to produce electrical potential in reaction to sounds
              • Case's M Space Model - children increase cognition using mental strategies
                • 1.Maturation of the child = maturation of the brain = greater capacity to learn (increasing myelination and neural connections)
                  • Fischers Skill Model - optimal level of skill (parallel with Piaget) due to brain maturation. As the capacity to process info increases, so does the level of skill. EG: Observation
                • 2. Practice of schemata elevates strain on cognition eg: riding a bike and taking in external info once no longer focussing on balance.
                • 3.Children integrate schemata - making central conceptual structures.
        • Motor Development
          • Perceptual Development(senses)
            • Face Perception
            • Space Perception
    • Memory
      • >4 Years- LTM is not formed
      • 6 months old can distinguish between novel and familiar stimulus after 2 weeks
        • 3 months old can distinguish between novel and familiar stimulus after 2 days

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