# 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


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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

* 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

三種神經元分類

* 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

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





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





Magnetoencephalography(MEG)腦磁圖