NEW YORK, Oct. 27 (TNSJou) -- NYU Langone Health, an academic medical center affiliated with New York University, issued the following news release: Changing levels of the chemical dopamine, a chemical most associated with motivation, may help explain why stressful experiences during infancy can lead to lasting behavioral issues, a new study in rodents shows. Experts have long understood that negative experiences early in life among rodents and other mammals, including humans, can affect later  more