After Effects Neurotransmitter Controls

I will supply an Illustrator file that shows four hormone pathways—serotonin, norepinephrine, dopamine, and GABA/glutamate—plus a short reference video that demonstrates the motion I’m after. Your task is to turn that artwork into an editable After Effects project where each hormone’s neurotransmitters can be switched on or off as a group. When a group is active, its particles should travel along the existing nerve path while gently rotating and fading in and out; inactive groups must remain completely still and visible.

Please set the project up so I can trigger these states quickly (simple check-box, slider, or similar controller per hormone is perfect). The timing and speed can match the sample I provide, but I should be able to tweak them later.

Deliverables
• A neatly organised .aep file with the .ai layers pre-comped, labelled, and linked
• One intuitive control for each hormone group that toggles motion

• Expressions or keyframes that handle the rotation and fade effects
• A brief text note explaining how to adjust speed, opacity, or add another hormone if needed

As long as the project opens cleanly in the current release of After Effects and the controls behave exactly as described, the job is complete.