Study of Brain Stimulation and MRI to Explore How Humans Recognize Objects and Process Vision

What this Trial Is About

Researchers are investigating how the human brain processes visual information through two distinct pathways one for recognizing what objects are and another for locating where objects are. This study aims to better understand these pathways using advanced brain imaging and stimulation techniques, focusing on how the brain recognizes different categories of objects and manages attention. Participants will undergo a variety of visual tasks combined with magnetic resonance imaging MRI and brain stimulation techniques such as transcranial magnetic stimulation TMS and transcranial electrical stimulation tES. Experiments include both online stimulation during tasks and offline stimulation before tasks, sometimes paired with brain imaging. Stimulation targets specific brain regions identified by functional MRI scans. The study involves multiple visits for different tests, and stimulation sessions vary in duration and method. Participants will be assessed through behavioral tasks involving quick viewing of images like faces, bodies, tools, and scenes, responding by typing or pressing buttons. Brain activity will be recorded using MRI, and responses to brain stimulation will be monitored through task performance measures such as accuracy and reaction time. Screening includes physical exams and medical history review. Participants may remain in the study for up to 3 years, with ongoing evaluation of brain function and behavior.

Brain Stimulation and Vision Testing