Ethical Issues in Neuroscience Research

Abstract

We have only a limited understanding of how the brain enables thought and behavior and how it becomes dysfunctional in neuropsychiatric disorders. Research in cognitive psychology, psychiatry, neurology, neurosurgery and nuclear medicine has been critical to our current understanding of the brain. Continued research is necessary to gain more knowledge of the etiology and pathophysiology of brain disorders and develop therapies to safely and effectively control and possibly prevent them. Yet mapping the brain through neuroimaging and intervening in the brain with psychotropic drugs, growth factors or implantable neuromodulating devices entail certain risks for research subjects participating in clinical trials. These risks need to be weighed against the potential benefit of knowledge gained from the outcomes of these trials to millions of people suffering from psychiatric and neurological diseases. The risks in neuroscience research are greater than in any other area of medicine and biotechnology because the brain is the source of the mind and the psychological properties that define persons. Can patients with neuropsychiatric disorders give informed consent to participate in neuroscience research? If they cannot consent, then can others give proxy consent on their behalf? What are the obligations of investigators recruiting and monitoring research subjects? In discussing the ethical issues in this research, this chapter focuses on neuroimaging to assess patients with severe brain injuries, neuromodulating techniques such as deep brain stimulation in neurology and psychiatry and brain-computer interfaces to bypass brain and spinal cord injury in restoring movement and communication.