Opportunities exist in several labs, including:
The Visual Attention Lab [Dr. Zenon Pylyshyn]
The VILLAGE (The Vision, Interaction, Language, Logic and Graphics Environment) [Dr. Doug DeCarlo, Dr. Matthew Stone]
The Language Acquisition and Neurolinguistics Lab [Dr. Karin Stromswold]
The Behavioral Genetics of Memory Lab [Dr. Randy Gallistel]
The Cognitive Development Lab [Dr. Alan Leslie]
The Object & Surface Perception Lab [Dr. Manish Singh]

See the webpages for the various labs for more details.