By Dr Ananya Mandal, MD. Dopamine is a neurotransmitter released by the brain that plays a number of roles in humans and other animals. Some of its notable functions are in: 1  movement. 2  memory. 3  pleasurable reward.
Sycamores (Platanus spp.) are tall, spreading shade trees. These North American natives have few problems or pests, but their older bark flakes off in patches. If your sycamore is shedding bark, it may be a healthy, maturing tree.
The name Sycamore is synonymous with three different types of trees which share many of the same characteristics. They include: 1  Middle Eastern Sycamore: Also found in eastern Africa, this type of Sycamore has an ashy appearance and contains fewer leaves than heartier versions that are exposed to more water.