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# System prepended metadata

title: 生物學-Brain

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# 生物學-Brain

Chapter 2 Introducing the Brain

**主要分成四大區塊**
* Frontal lobe
* Parietal lobe
* Temporal lobe
* Occipital lobe

![](https://i.imgur.com/YruQNYy.png)

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Chapter 3 The Electrophysiological Brain (腦神經電生理)

**Representations(表徵)**
* Cognitive psychology:mental representations 
  Mental model of outside world e.g. colors,objects 
  一個人自己對外在的認知
  ![](https://i.imgur.com/vu8qsOO.jpg)

  
* Neuroscience:neural representation
  The properties of the outside world manifest themselves in the neural signal/biological system
  e.g. edges,rectangel

Two main electrophysiological(電生理的) techniques
* Rate coding:Single-cell recording  侵入性的,要撥開頭骨插進去
 Rate coding: A given stimulus/event is associated with an increase in the ==rate of neural firing==.
 Single-cell recording:
     1.non-human primate 靈長類
     2.animal model 
 ![](https://i.imgur.com/ggQgoK4.png)
 
 三種神經元分類
 ![](https://i.imgur.com/pUmNddS.png)


  
* Temporal coding:
  Def:A given stimulus/event is assoiciated with greater ==synchronization of firing==
  1.Electroencephalography(EEG) 腦電波圖
  2.Event-related potentials(ERPs) 事件相關電位變化

Electroencephalography:a recording(graphy)of electrical signal (electro) from the brain (encephalo
![](https://i.imgur.com/7gmBMro.png)

Alpha wave:8-13 Hz ; Beta wave:13-30 Hz ; Gama wave:30-50 Hz
Theta wave:4-8 Hz  ; Delta wave:1-4 Hz 

![](https://i.imgur.com/49siJ27.png)


![](https://i.imgur.com/oe2fdBa.png)

![](https://i.imgur.com/4yJeOwn.png)

![](https://i.imgur.com/NrHHsn7.png)

Channel:recording from a pair of electrodes (電極)

Event-related potentials(ERPs) 就是單位時間內,EEG針對某事件的所有電位加總

![](https://i.imgur.com/LAjfOSE.png)

![](https://i.imgur.com/7OrVrA5.png)

![](https://i.imgur.com/pgu8yrP.png)

![](https://i.imgur.com/RdmDzNp.png)



Magnetoencephalography(MEG)腦磁圖






