Activity Of Neurotransmitters Involved In Learning, Memory, And Mood!Phosphatidyl Serine is a phospolipid compound derived from soy lecithin that plays an essential role in cell membrane compostition and inter-cellular communication. Phosphatidyl Serine is a major structural component of neural membranes where it assists in the conduction of electrical impulses and facilitates the activity of neurotransmitters involved in learning, memory and mood. These properties make NOW Phosphatidyl Serine an ideal supplement for the support of cognitive function.