AP PSYCHOLOGY

Detailed explanation-1: -Neurogenesis is the process by which new neurons are formed in the brain. Neurogenesis is crucial when an embryo is developing, but also continues in certain brain regions after birth and throughout our lifespan.

Detailed explanation-2: -Although the majority of neurons are already present in our brains by the time we are born, there is evidence to support that neurogenesis (the scientific word for the birth of neurons) is a lifelong process.

Detailed explanation-3: -Adult neurogenesis can be divided into four phases: a precursor cell phase, an early survival phase, a postmitotic maturation phase, and a late survival phase.

Detailed explanation-4: -How neurogenesis occurs. The process of neurogenesis in the brain starts off by getting triggered by neurogenic signals. These could arise from a number of factors such as stimulated activity in certain brain regions. This then helps to develop and stimulate neural stem cells.

Detailed explanation-5: -The process of neurogenesis is most active during embryonic development and continues after birth for a year or 2 in humans.