Correction: Optogenetics in Mice Performing a Visual Discrimination Task: Measurement and Suppression of Retinal Activation and the Resulting Behavioral Artifact

• Bethanny Danskin, 
• Daniel Denman, 
• Matthew Valley, 
• Douglas Ollerenshaw, 
• Derric Williams, 
• Peter Groblewski, 
• Clay Reid, 
• Shawn Olsen, 
• Timothy Blanche, 
• Jack Waters