Serotonin vs. Dopamine - 7 Key Differences Between Pleasure and Happiness

Dopamine, Serotonin, and Cortisol

This section discusses the roles of dopamine, serotonin, and cortisol in the brain's reward system and how chronic stress affects this system.

Dopamine

• Dopamine is the neurotransmitter responsible for positive reinforcement and learning.

• It signals that something feels good and we want more of it.

• Without understanding the difference between dopamine and serotonin, we may continue to seek rewards endlessly.

Serotonin

• Serotonin is the neurotransmitter that signals satiety or satisfaction.

• Chronic stress can down-regulate serotonin receptors leading to depression.

Cortisol

• Cortisol is a hormone released during stress.

• It affects the prefrontal cortex which inhibits impulsive behavior.

• Chronic stress can lead to prefrontal cortical dysfunction which causes impulsivity and addiction.

Reward System

• There is only one reward system in our brain that drives us to do things necessary for survival such as getting out of bed, working, eating food etc.

• Animals with no reward system have no will to live.

Importance of Reward System

This section emphasizes the importance of reward systems in our lives.

Survival

• The reward system is essential for survival because without it we would not be motivated to do things necessary for our survival like work or eat food.

Pleasure vs Happiness

In this section, the speaker explains the differences between pleasure and happiness and why it is important to understand these differences.

Differences between Pleasure and Happiness

• Pleasure is short-term, while happiness is long-term.

• Pleasure is visceral, while happiness is ethereal.

• Pleasure can be achieved alone or with substances/behaviors, while happiness is achieved in social groups.

• The extremes of pleasure (substances/behaviors) are addictive, but there's no such thing as being addicted to too much happiness.

• Dopamine leads to tolerance, which means you need more and more to get less and less.

Importance of Understanding the Differences

• Understanding the differences between pleasure and happiness helps people make sense of the world and how they're being manipulated by it.

• Dopamine is an excitatory neurotransmitter that leads to chronic overstimulation of neurons in the body. This can lead to neuronal cell death if not regulated properly.

Serotonin and Dopamine

In this section, the speaker discusses the neurotransmitters serotonin and dopamine, their effects on the brain, and how they relate to happiness.

Serotonin is inhibitory

• Serotonin is an inhibitory neurotransmitter that does not cause overexcitement in neurons.

• Therefore, down-regulating the receptor is unnecessary because it is not being overexcited but rather over-inhibited.

No such thing as overdosing on happiness

• There is no such thing as overdosing on too much happiness.

• However, dopamine down-regulates serotonin.

• Seeking more pleasure leads to more unhappiness.

Difference between reward and contentment

• It's important to know the difference between reward and contentment, pleasure and happiness.

• Memes and mantras that suggest taking substances for happiness are misleading.

• Public relations and the internet have contributed to hundreds of millions of people being misled about what brings true happiness.