The?brain?is?a?complex?network?of?billions?of?neurons.

大腦是由數(shù)十億個(gè)神經(jīng)元組成的復(fù)雜網(wǎng)絡(luò)。

Neurons?can?be?excitatory?or?inhibitory.

神經(jīng)元可以是興奮性的，也可以是抑制性的。

Excitatory?neurons?stimulate?others?to?respond?and?transmit?electrical?messages,?while?inhibitory?neurons?SUPPRESS?responsiveness,?preventing?excessive?firing.

興奮性神經(jīng)元刺激其他神經(jīng)元作出反應(yīng)并傳遞電信息，而抑制性神經(jīng)元?jiǎng)t抑制反應(yīng)性，防止過度放電。

Responsiveness?or?excitability?of?a?neuron?is?determined?by?the?value?of?electrical?voltage?across?its?membrane.

神經(jīng)元的 由其膜上的電壓值決定。

Basically, a?neuron?is?MORE?responsive?when?it?has?more?POSITIVE?charges?inside;?and?is?LESS?responsive?when?it?becomes?more?NEGATIVE.

基本上，當(dāng)神經(jīng)元內(nèi)部具有更多正電荷時(shí)，它的反應(yīng)性更強(qiáng)；當(dāng)具有更多負(fù)電荷時(shí)，反應(yīng)性更低。

（家里有錢時(shí)，很興奮）內(nèi)部正電荷，反應(yīng)性更強(qiáng)

GABA?is?a?major?INHIBITORY?neurotransmitter.

GABA是一種主要的抑制性神經(jīng)遞質(zhì)。

Upon?binding,?it?triggers?GABA?receptors,?ligand-gated?chloride?channels,?to?open?and?allow?chloride?ions?to?flow?into?the?neuron,?making?it?more?NEGATIVE?and?LESS?likely?to?respond?to?new?stimuli.

一旦結(jié)合，它立即觸發(fā)GABA受體，配體門控氯離子通道打開，氯離子流入神經(jīng)元，具有更多負(fù)電荷，對(duì)新刺激的反應(yīng)更少。

Glutamate?receptors,?another?type?of?ion?channel,?upon?binding?by?glutamate,?open?to?allow?POSITIVELY-charged?ions?into?the?cell,?making?it?more?POSITIVE?and?MORE?likely?to?generate?electrical?signals.

谷氨酸受體是另一種離子通道，在谷氨酸的作用下，它被打開，帶正電荷的離子進(jìn)入細(xì)胞，使細(xì)胞更具正性，更容易產(chǎn)生電信號(hào)。

總結(jié)：GABA抑制性神經(jīng)遞質(zhì)，谷氨酸興奮性神經(jīng)遞質(zhì)。

咕咕咕（布谷鳥）嘰嘰咋咋叫很興奮；

咯咯咯（丑小鴨）很沮喪。