Biology- Behaviour

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  • Behavior
    • Innate
      • Genetically Determined
        • No sense of purpose
      • escape reflexes in response to stimulus
      • Kinesis non-directional, rate of movement increases in unfavourable condiitons
      • Taxis iis directional behavioural response to stimulus
      • Complex innate behaviours: series of innate behaviours Eg waggle dance
    • Learned
      • Change and adapt with experience
      • Habitiuation: ignoring due to no reward or punishment
      • imprinting in sensitive period 36 hours. associating
      • Classical conditioning: dog and salivia, Pavlovs dog, bell  becomes a conditioned stimuls to saliva
      • operant condiitoning: skinners box, associating something with a reward or punishment.
      • exploratory learning: retaining information eg escape routes, food
      • insight learning: the ability to solve problems and solution remembered
    • Primate Behaviour
      • Heirarchy is order of importance Eg rights to mate and food
      • mountain gorillas: one dominant male, protect and find food. social organisation and primate behaviour
      • socail behaviours include grooming and caring for offspring
      • advantages: birth to few infants, 1 to 1 care increases survival rates.
      • young learn through observation
    • Dopamine and DNA
      • low levels dopamine = parkinsons. Dopamine pre-cursor l-dopa is treatment.
        • raised levels of dompamine linked with gambling and schizophrenia
      • dopamine increases arousal, decreases inhibition, increase in creativity
      • activities affected by variants in the receptors DRD1-DRD5
      • 50 variants of DRD4 gene. inheritance of a different variant affects levels of dopamine in brain.
        • EG particular variant is frequent in ADHD sufferes


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