Neuroethics is a rapidly growing subfield, straddling applied ethics, moral psychology and philosophy of mind. It has clear affinities to bioethics, inasmuch as both are responses to new developments in science and technology, but its scope is far broader and more ambitious because neuroethics is as much concerned with how the sciences of the mind illuminate traditional philosophical questions as it is with questions concerning the permissibility of using technologies stemming from these sciences. In this article, I sketch the two (...) branches of neuroethics, the applied and the philosophical, and illustrate how they interact. I also consider representative themes from each: the ethics of dampening memory and of cognitive enhancement, on the one hand, and the attack upon the reliability of deontological intuitions and upon free will, on the other. (shrink)

Research on the use of propranolol as a pharmacological memory dampening treatment for post-traumatic stress disorder is continuing and justifies a second look at the legal and ethical issues raised in the past. We summarize the general ethical and legal issues raised in the literature so far, and we select two for in-depth reconsideration. We address the concern that a traumatized witness may be less effective in a prosecution emerging from the traumatic event after memory dampening treatment. We analyze this (...) issue in relation to sexual assault, where the suggestion that corroborating evidence may remedy any memory defects is less likely to be helpful. We also consider the clinical ethical question about a physician's obligation to discuss potential legal consequences of memory dampening treatment. We conclude that this latter question reflects a general problem related to novel medical treatments where the broader socio-legal consequences may be poorly understood, and suggest that issues of this sort could usefully be addressed through the promulgation of practice guidelines. (shrink)

The National Institute of Mental Health reports that approximately 5.2 million Americans experience post-traumatic stress disorder each year. PTSD can be severely debilitating and diminish quality of life for patients and those who care for them. Studies have indicated that propranolol, a beta-blocker, reduces consolidation of emotional memory. When administered immediately after a psychic trauma, it is efficacious as a prophylactic for PTSD. Use of such memory-altering drugs raises important ethical concerns, including some futuristic dystopias put forth by the President's (...) Council on Bioethics. We think that adequate informed consent should facilitate ethical research using propranolol and, if it proves efficacious, routine treatment. Clinical evidence from studies should certainly continue to evaluate realistic concerns about possible ill effects of diminishing memory. If memory-attenuating drugs prove effective, we believe that the most immediate social concern is the over-medicalization of bad memories, and its subsequent exploitation by the pharmaceutical industry. (shrink)

Post-traumatic stress disorder is a “young” disorder formally recognized in the early 1980s, although the symptoms have been noted for centuries particularly in relation to military conflicts. PTSD may develop after a serious traumatic experience that induces feelings of intense fear, helplessness or horror. It is currently characterized by three key classes of symptoms which must cause clinically significant distress or impairment of functioning: persistent and distressing re-experiencing of the trauma; persistent avoidance of stimuli associated with the trauma and numbing (...) of general responsiveness; and persistent symptoms of hyper-arousal. One of the possible symptoms within the second class is difficulty in remembering an important aspect of the traumatic event.PTSD is not an uncommon condition, with an estimated lifetime prevalence of about 7-9% based on studies conducted in the United States and Canada, with women at higher risk than men. While not everyone who experiences a significant trauma will go on to develop PTSD, about a third will do so. Sexual assault, along with other forms of assaultive violence, pose a comparatively high risk of PTSD. (shrink)

Die Posttraumatische Belastungsstörung (PTBS) ist ein schwerwiegendes psychisches Krankheitsbild, das Betroffene nach dem Erleben traumatisierender Situationen entwickeln. Im Zusammenhang mit den Auslandseinsätzen der Bundeswehr ist die PTBS bei Soldaten in den letzten Jahren verstärkt in den Fokus der deutschen Öffentlichkeit gerückt. Auch zivile Traumata bergen ein großes PTBS-Risiko. Seit einigen Jahren werden Methoden zur medikamentösen Prävention der PTBS erforscht. Die beiden wichtigsten Ansätze, die Prävention mit zentralnervös wirkenden Betablockern und Glukokortikoiden, basieren auf der Idee, durch den Eingriff in neuroendokrine Stressachsen (...) Einfluss auf die Art und Weise zu nehmen, in der die Erinnerung im Gedächtnis konsolidiert wird. Durch eine Entemotionalisierung und Abschwächung entsprechender Gedächtnisspuren soll das spätere Auftreten einer PTBS verhindert werden. Beide Ansätze zeigen in Pilotstudien vielversprechende Ergebnisse. Angesichts der herausragenden Bedeutung des Gedächtnisses für Individuum und Gesellschaft sollten Ansätze zur medikamentösen Gedächtnismodifikation (MGM) unter neuroethischen Gesichtspunkten diskutiert und bewertet werden. Der Text beleuchtet die MGM zur PTBS-Prävention entlang von fünf Problemachsen: 1) der Einflussnahme von MGM auf den Prozess der normalen psychischen Verarbeitung traumatischer Erlebnisse, 2) der Gefahr einer Entkopplung von Erinnerung und Realität, 3) der Bedeutung von emotionaler Erinnerung für die Moral, 4) der sozialen, juristischen und historischen Relevanz einer wahrhaftigen Erinnerungskultur und 5) der potenziellen Förderung eines gesellschaftlichen Medikalisierungsprozesses. Trotz ernsthaft zu diskutierender ethischer Bedenken ist – vor dem Hintergrund der Schwere des Krankheitsbilds – aus unserer Sicht eine MGM zur PTBS-Prävention grundsätzlich begrüßenswert, sollte jedoch derzeit nur im Rahmen klinischer Studien erfolgen. Hierfür stellen wir acht forschungsethische Aspekte zur Diskussion, die bei solchen Studien zu berücksichtigen sind. (shrink)