Users are asked to share their location with Tinder so the app can recommend people within a certain distance. To make that feature work, Tinder has to record the last known location of each user.
Serotonin is known to be the most responsible in terms of neurotransmitters and depression. Serotonin is responsible for an array of functions most importantly being the mood and perception of a person.
Lets start with the basics. Dopamine is a neurotransmitter, one of those chemicals that is responsible for transmitting signals in between the nerve cells (neurons) of the brain. Very few neurons actually make dopamine. Some, in a part of the brain called the substantia nigra, are the cells that die during Parkinsons disease.