Martha Farah is at the Center for Cognitive Neuroscience, University of Pennsylvania, 3815 Walnut St., Philadelphia, Pennsylvania 19104-6196, USA. mfarah@psych.upenn.edu
There is growing public awareness of the ethical issues raised by progress in many areas of neuroscience. This commentary reviews the issues, which are triaged in terms of their novelty and their imminence, with an exploration of the relevant ethical principles in each case.
