Brain Stimuli (image) Boston Children's Hospital Share Print E-Mail Caption While brain activity was recorded, subjects were shown five categories of objects, with five examples within each category. Each object was presented in different sizes and orientations. Credit Courtesy Gabriel Kreiman, PhD, Children's Hospital Boston Usage Restrictions Please credit as indicated. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.