Skip to main content

Home/ Learning/ Group items tagged Neuron

Rss Feed Group items tagged

isaac Mao

Neuron - Wikipedia, the free encyclopedia - 1 views

  • ...2 more annotations...
  • Neurons exist in a number of different shapes and sizes and can be classified by their morphology and function. The anatomist Camillo Golgi grouped neurons into two types; type I with long axons used to move signals over long distances and type II without axons. type I cells can be further divided by where the cell body or soma is located. The basic morphology of type I neurons, represented by spinal motor neurons, consists of a cell body called the soma and a long thin axon which is covered by the myelin sheath. Around the cell body is a branching dendritic tree that receives signals from other neurons. The end of the axon has branching terminals (axon terminal) that release transmitter substances into a gap called the synaptic cleft between the terminals and the dendrites of the next neuron.
isaac Mao

Efficient technique enables thinking - 0 views

  • However, contact between nerve cells is also constantly being set up and dismantled in adults. It is this continuous restructuring of the brain that allows us to learn and to forget.
  • In reality, it should actually be consuming much more energy. This is because both young and adult nerve cells allow many hundreds of cell extensions to grow towards their neighbours.
  • ...1 more annotation...
  • The scientists marked a number of nerve cells with fluorescent dyes, observed them under a special microscope and discovered the secret to how the information is exchanged: local calcium signals very quickly transmit all the necessary information to the cell. A synapse only actually develops when the cell and the contact point prove to be suitable candidates for long-term contact.
isaac Mao

Free Will vs. the Programmed Brain: Scientific American - 0 views

  • In this light, it’s not surprising that people behave less morally as they become skeptical of free will. Further, the Vohs and Schooler result fits with the idea that people will behave less responsibly if they regard their actions as beyond their control. If I think that there’s no point in trying to be good, then I’m less likely to try.
  •  
    这可以解释为什么在一个极权国家,人们趋向于不负责任
1 - 5 of 5
Showing 20 items per page