- 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.