👉 The term "perivisceral" is a medical term used to describe the brain's regions that are typically located in the lower part of the brain, particularly near the cerebrum. These areas are known as the periventricular or perivesselal regions. Periventricular and perivesselal regions are thought to be involved in various cognitive functions such as memory, language, perception, and motor control. They also play a role in regulating body temperature, heart rate,