2.1 Reductionism and hypothesis

Loading...

Из курса от партнера Peking University

Advanced Neurobiology I

258 оценки

Peking University

Advanced Neurobiology I

258 оценки

Hello everyone! Welcome to advanced neurobiology! Neuroscience is a wonderful branch of science on how our brain perceives the external world, how our brain thinks, how our brain responds to the outside of the world, and how during disease or aging the neuronal connections deteriorate. We’re trying to understand the molecular, cellular nature and the circuitry arrangement of how nervous system works. Through this course, you'll have a comprehensive understanding of basic neuroanatomy, electral signal transduction, movement and several diseases in the nervous system. This advanced neurobiology course is composed of 2 parts (Advanced neurobiology I and Advanced neurobiology II, and the latter will be online later). They are related to each other on the content but separate on scoring and certification, so you can choose either or both. It’s recommended that you take them sequentially and it’s great if you’ve already acquired a basic understanding of biology. Thank you for joining us!

Из урока

Morphology of the neuronal cell & Cellular and Molecular Biology of the Neuron

Let's learn more about the basic unit of the nervous system: the neuron.

2.1 Reductionism and hypothesis4:20

2.2 Morphology of the neuron5:45

2.3 Visualization of neurons and the neuron doctrine11:19

2.4 The story of the fluorescent proteins6:43

2.5 Stories of the Nobel prize13:12

2.6 Organic fluorescent probes2:23

2.7 Proteins specifically expressed in neurons and "brainbow" technique3:46

2.8 Microscopy techniques I14:18

2.9 Microscopy techniques II11:43

2.10 The electron microscope18:29

2.11 Glia and myelination3:00

2.12 Research: AIS and Ankyrin G14:00

Познакомьтесь с преподавателями

Yan Zhang
Professor
School of Life Sciences, Peking University
Yulong Li
Research Fellow
School of Life Sciences, Peking University

Okay, so this lecture,

we are going to talk about the morphology of neuronal cell.

Before we are getting into this topic today, we want to mention two concepts.

One is reductionism, and the other is hypothesis.

What is the reductionism?

Reductionism is we want to study an issue and

we divide this issue into several smaller compartments.

For example, physiology, if we want to study the physiological function

of our whole body, first of all, we want to divide our body into

organs like systems and organs.

Like digestion system or the system we use to do our metabolism.

And then in this system, we further divide this system into organs.

For example, in the digestion system, we have stomach, and

we have our tubular structure.

And then in these organs,

we further divide our organs into smaller pieces,

for example, our cells in our stomach.

Under the cell, we have different

subcellular compartment like nucleus and

reticular Golgi and other compartments.

And then in these cellular or

subcellular compartments that we can further

divide into proteins, molecules, nucleic acid.

So this approach called reductionism.

And then all our modern science follow this reductionism for a long time,

including mathematics, physics, chemistry, and of course, biology.

And what are these rules?

It's a good way or not to study more than science, it's still adorable.

So this is a picture, a cover image of international journal of kidney and

showing several scientists trying to study

the morphology or the function of elephant.

And it depends on where to look and where the scientist is.

They report different morphology of elephant.

So the one sitting on the top of elephant, touching

the elephant's ears, says elephants is like a fan.

And then the one standing on the side of the elephant,

touching the trunk of elephant, it says the elephant is like a wall.

And then the one holding his tail said that the elephant is actually a rope.

That's reflect respect of the problem that

produced by reductionism, that we cannot see the whole picture.

So the other research is so detailed and so narrow so

that we can only see a certain perspective of our problem or

our issue and we cannot study the whole picture.

And then because we are following the reductionism to study the issue

in question, our scientific question, then we needed to have hypothesis.

A hypothesis is a testable statement

that we can use either observation or

experiment to test whether this statement is true or not.

Ознакомьтесь с нашим каталогом

Присоединяйтесь бесплатно и получайте персонализированные рекомендации, обновления и предложения.

Coursera делает лучшее в мире образование доступным каждому, предлагая онлайн-курсы от ведущих университетов и организаций.

© Coursera Inc., 2019 Все права защищены.

Загрузить из App Store

Загрузить в Google Play