神经科学基础,第2部分:神经元和网络

Fundamentals of Neuroscience, Part 2: Neurons and Networks

Discover how neurons work together to create complex networks inside the brain.

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哈佛大学
edX
  • 完成时间大约为 6
  • 初级
  • 英语
注:因开课平台的各种因素变化,以上开课日期仅供参考

你将学到什么

Basics of synapses

How neurons communicate with each other

How interconnected neurons in neuronal circuits interact with each other

The role of neuromodulation in the firing of synapses

课程概况

Neurons in isolation are fascinating and complicated, but the real magic of neuroscience happens in the interaction between neurons. In this course, we examine how neurons pass signals to one another and how complex dynamics can result from just a few neurons arranged in relatively simple circuits.

Continue your journey through our Fundamentals of Neuroscience series with animations that explore the richness and complexity of the brain, documentaries about working labs around Cambridge.

Join us as we use virtual labs that simulate neuron circuitry as we investigate the collective behavior of neurons and learn how the brain modulates the signals in those networks.

课程大纲

Neurons in isolation are fascinating and complex, but the real magic of neuroscience becomes manifest when we consider how neurons interact with one another. In this module, we examine how neurons pass signals to one another, and we explore how complex dynamics can result from even small numbers of neurons arranged in relatively simple circuits.

Lesson 1: The Synapse
The junctions between neurons, called synapses, allow information to pass from one neuron to another. In lesson 1 “The Synapse,” we explore what synapses are made of, and how they work.

Lesson 2: Excitation & Inhibition
Synapses can be grouped into two categories: synapses that increase the activity of the postsynaptic neuron are called excitatory synapses, while those that decrease its activity are called inhibitory synapses. In lesson 2 “Excitation & Inhibition,” we discuss the main differences between excitatory and inhibitory synapses.

Lesson 3: Small Circuits
Neurons combine information from many synapses at once in a process known as synaptic integration. In lesson 3 “Small Circuits,” we explore how a neuron integrates information from multiple synapses over time to allow complex signaling.

Lesson 4: Neuromodulation
How many components are there in a synapse? You may think that the answer is simple: two, the presynaptic and the postsynaptic terminals. In lesson 4 “Neuromodulation,” we’ll see that this is not entirely true: the strength of many synapses is directly influenced by a third neuron, in a process called neuromodulation.

Lesson 5: Potentiation & Depression
One of the most amazing properties of the nervous system is its ability to adapt and change in the face of a changing environment, a phenomenon called "neuronal plasticity." Lesson 5, “Potentiation and Depression,” focuses on how neuronal plasticity occurs in the brain, and how it shapes the way we think and behave.

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