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6.8Summary

  • The cerebral cortex allocates brain functions.
  • There are a hundred billion neurons in the brain. Neurons transmit stimuli to adjacent neurons through synapses.
  • Nerve function is determined by secreted stimulatory or inhibitory neurotransmitters.
  • Substances with the same effect as neurotransmitters are called agonists and those with the opposite effect are called antagonists.
  • Memory is caused by increased neurotransmission efficiency, unimpeded neural circuits, and formation of dendritic spines.
  • PET, fMRI, electroencephalography, and light topography are methods for measuring brain function in real time, and X-ray CT is suitable for examining brain structure.
  • Alzheimer's disease is caused by accumulation of amyloid in the brain. The behavioral abnormalities of dementia are caused by destruction of neurons in the cerebral cortex.

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