How does Data simulate emotions?

[Bickendan]

He has this 'chip' (where's the fish?). Does it cause electrical impulses simulating hormones as controlled by his positronic brain or does it tell him to feel sad or angry because it's really in charge and must keep Spot away from the Nazi Ducks?

 

[Dr Dave]

Did you huff paint today?

 

[CaptainWacky]

The same way he simulates everything else.

 

[Cassie]

Through his positronic penis?

 

[CaptainWacky]

I wonder if Data is truly sapient or if it's all just a trick.

Like with humans.