Neurochemicals have become somewhat popular in recent times. Almost everyone has heard about dopamine. Perhaps we might loosely associate it with pleasure, video games, relationships, gambling, etc. I once saw a Venn diagram showing the different neurochemicals and read an ebook on mastering your happy chemicals. I cannot quite recall the name of the book or the author. That was many years ago, and I was always reading something. I do remember "happy chemicals" in the title of the ebook, however. So let's take a look at what some neurochemicals are associated with and try to memorize what the neurochemicals dopamine, serotonin and norepinephrine do and A for.

Dopamine: Alertness Pleasure Reward Motivation Euphoria

Serotonin Well-being pleasure relaxation contentment positivity

Norepinephrine focus fight or flight arousal memory retrieval

I'll be using my recorded memory palace from the Serpentine galary[https://youtu.be/6BsKqLI7LdA] to store the info.

Serpentine gallery memory palace location
Serpentine gallery – first location of the memory palace.

In the first location I will use the image of a giant syringe spilling out drops of liquid onto an eye.
This syringe reminds me of dopamine (as in doping) and the eye reminds me of alertness.

giant syringe spilling drops onto an eye, representing alertness and dopamine
Syringe (doping → dopamine) + eye (alertness).
second memory palace location
Second location – ready for dopamine mnemonic.

In the second location, I imagine throwing mushy chocolate cake at a shiny golden trophy. So the chocolate cake will represent pleasure and the trophy will represent reward.

In this location. I will imagine soldiers (motivation) dancing (euphoria). This reminds me that dopamine is also involved in motivation and euphoria!

soldiers dancing – motivation and euphoria
Soldiers dancing = motivation & euphoria (dopamine).

Now let's move on to serotonin.

serotonin memory palace location
Serotonin location – think "Sea‑row‑tonin".

Here I need an image for serotonin. Kind of sounds like Sea-row-tonin. The first image that comes to my mind is a seahorse with a rowing paddle. This should be enough to remember the word.
Now I need an image for well-being. So maybe I could use someone meditating? Doing breathwork?
So I could imagine a seahorse rowing down the wall on a small boat carrying a group of meditators.

seahorse rowing a boat carrying meditators – well-being and serotonin
Seahorse rowing (serotonin) + meditators = well‑being.
location for pleasure and relaxation
Location for serotonin: pleasure & relaxation.

To remember pleasure and relaxation, I could imagine Just a giant chocolate bar (pleasure), melting on a rocking chair (relaxation)

giant chocolate bar melting on a rocking chair – pleasure and relaxation
Chocolate bar (pleasure) + rocking chair (relaxation).
location for contentment and positivity
Location for contentment & positivity.

To remember contentment and positivity, I could imagine a sleeping, smiling cat (contentment) with shining sun rays (positivity).

sleeping smiling cat with sun rays – contentment and positivity
Cat sleeping (contentment) + shining rays (positivity).

Now for norepinephrine:

norepinephrine memory location
Norepinephrine location – "nob, pin, eve, run".

This word is more complex. So perhaps I will use this one location to store it. Norepinephrine kind of sounds like nob, pin, eve, run.
So perhaps think of Eve wearing a doorknob hat with pins running towards the barrier.

Eve wearing doorknob hat, pins running – norepinephrine
Eve + doorknob + pins running = norepinephrine.
location for focus and fight or flight
Broomstick location – focus & fight/flight.

So now we move on to the broomstick and we imagine we have to memorize focus and "fight or flight." So here I might imagine a giant magnifying glass focusing light onto the broomstick that has a boxing glove attached on top of it!

magnifying glass focusing on broomstick with boxing glove – focus and fight or flight
Magnifying glass (focus) + broomstick & boxing glove (fight/flight).
location for arousal and memory retrieval
Location – arousal (battery) & memory (brain).

So now I have to pick an image for arousal. I'm thinking "electricity," since it jolts people awake or arouses them. It's also been used in resuscitation procedures to wake people who are drifting into potentially fatal unconsciousness. Electricity was used to make the muscles of a frog twitch. But electricity is too generic. So maybe I use a battery.
So imagine a battery in the bin leaking with acid on top of a brain. See the sides of the trashcan somewhat melting away.
This should remind me of arousal (battery) and memory retrieval (brain).

battery leaking acid onto a brain inside a melting trashcan – arousal and memory retrieval
Battery (arousal) + brain (memory retrieval).

Now it's just a matter of recalling the information by going on a mental trip through my locations.