This shows a cross check with a reddish colored dress.
Credit
Montage: Gegenfurtner et al. / <i>Current Biology</i> 2015
Usage Restrictions
None
License
Licensed content
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.