They were regularly given physical checkups and cognitive tests, and when they died, their brains were all donated for autopsy.
त्यांची नियमितपणे शारिरीक तपासणी  आणि मेंदूची चाचणी केली गेली. मरणोत्तर त्यांचा मेंदू  शवपरीक्षेला दिला गेला.