![]() |
« December 2014 | Main | February 2015 »
![]() |
Posted by NELB Staff on 01/29/2015 at 06:54 PM | Permalink | Comments (0)
![]() |
Last Edition's Most Popular Article(s):
In The Popular Press:
In the Academic Literature:
|
||
|
Posted by NELB Staff on 01/25/2015 at 09:12 PM | Permalink | Comments (0)
"A Diet Enriched with Curcumin Impairs Newly Acquired and Reactivated Fear Memories"
Monsey MS, Gerhard DM, et. al.
Curcumin, a yellow-pigment compound found in the popular Indian spice turmeric (Curcuma longa), has been extensively investigated for its anti-inflammatory, chemopreventative, and antidepressant properties. Here, we examined the efficacy of dietary curcumin at impairing the consolidation and reconsolidation of a Pavlovian fear memory, a widely studied animal model of traumatic memory formation in posttraumatic stress disorder (PTSD). We show that a diet enriched with 1.5% curcumin prevents the training-related elevation in the expression of the immediate early genes (IEGs) Arc/Arg3.1 and Egr-1 in the lateral amygdala (LA) and impairs the 'consolidation' of an auditory Pavlovian fear memory; short-term memory (STM) is intact, whereas long-term memory (LTM) is significantly impaired. Next, we show that dietary curcumin impairs the 'reconsolidation' of a recently formed auditory Pavlovian fear memory; fear memory retrieval (reactivation) and postreactivation (PR)-STM are intact, whereas PR-LTM is significantly impaired. Additional experiments revealed that dietary curcumin is also effective at impairing the reconsolidation of an older, well-consolidated fear memory. Furthermore, we observed that fear memories that fail to reconsolidate under the influence of dietary curcumin are impaired in an enduring manner; unlike extinguished fear memories, they are not subject to reinstatement or renewal. Collectively, our findings indicate that a diet enriched with curcumin is capable of impairing fear memory consolidation and reconsolidation processes, findings that may have important clinical implications for the treatment of disorders such as PTSD that are characterized by unusually strong and persistently reactivated fear memories.
Posted by NELB Staff on 01/21/2015 at 06:05 PM | Permalink | Comments (0)
![]() |
Last Edition's Most Popular Article(s):
In The Popular Press:
In the Academic Literature:
|
||
|
Posted by NELB Staff on 01/18/2015 at 07:18 PM | Permalink | Comments (0)
Recently published in the Journal of Medical Ethics:
"The Ethics of Molecular Memory Modification"
Carl E. Fisher
Novel molecular interventions have recently shown the potential to erase, enhance and alter specific long-term memories. Unique features of this form of memory modification call for a close examination of its possible applications. While there have been discussions of the ethics of memory modification in the literature, molecular memory modification (MMM) can provide special insights. Previously raised ethical concerns regarding memory enhancement, such as safety issues, the ‘duty to remember’, selfhood and personal identity, require re-evaluation in light of MMM. As a technology that exploits the brain's updating processes, MMM helps correct the common misconception that memory is a static entity by demonstrating how memory is plastic and subject to revision even in the absence of external manipulation. Furthermore, while putatively safer than other speculative technologies because of its high specificity, MMM raises notable safety issues, including potential insidious effects on the agent's emotions and personal identity. Nonetheless, MMM possesses characteristics of a more permissible form of modification, not only because it is theoretically safer, but because its unique mechanism of action requires a heightened level of cooperation from the agent. Discussions of memory modification must consider the specific mechanisms of action, which can alter the weight and relevance of various ethical concerns. MMM also highlights the need for conceptual accuracy regarding the term ‘enhancement’; this umbrella term will have to be differentiated as new technologies are applied to a widening array of purposes.
Posted by NELB Staff on 01/17/2015 at 07:19 PM | Permalink | Comments (0)
![]() |
Last Edition's Most Popular Article(s):
In The Popular Press:
In the Academic Literature:
|
||
|
Posted by NELB Staff on 01/16/2015 at 07:17 PM | Permalink | Comments (0)
"Free Will Skepticism: Current Arguments and Future Directions" by Heidi M. Ravven has been published in the most recent issue in Neuroethics:
Abstract
Offered here is a review of Gregg D. Caruso’s edited volume, Exploring the Illusion of Free will and Moral Responsibility [1]. Assembled here are essays by nearly all the major contributors to the philosophical free will debate on the denial and skeptical side. The volume tells us where the field currently is and also gives us a sense of how the free will debate is actually advancing toward greater understanding. Perhaps we can even discern some glimmer of hope for a resolution or a degree of consensus that could, in the near future, underlie or give rise to practical engagements to bring about significant social transformations and innovations toward a more humane society.
Posted by NELB Staff on 01/14/2015 at 12:02 PM | Permalink | Comments (0)
"Delusions and Responsibility for Action: Insights from the Breivik Case" by Lisa Bortolotti, et. al., has been published in the most recent issue in Neuroethics:
Abstract
What factors should be taken into account when attributing criminal responsibility to perpetrators of severe crimes? We discuss the Breivik case, and the considerations which led to holding Breivik accountable for his criminal acts. We put some pressure on the view that experiencing certain psychiatric symptoms or receiving a certain psychiatric diagnosis is sufficient to establish criminal insanity. We also argue that the presence of delusional beliefs, often regarded as a key factor in determining responsibility, is neither necessary nor sufficient for criminal insanity.
Posted by NELB Staff on 01/12/2015 at 12:01 PM | Permalink | Comments (0)
"Enhancing Autonomy by Reducing Impulsivity: The Case of ADHD" by Jonathan Pugh has been published in the most recent issue in Neuroethics:
Abstract
In a recent article in this journal, Schaefer et al. argue that it might be possible to enhance autonomy through the use of cognitive enhancements. In this article, I highlight an example that Schaefer et al. do not acknowledge of a way in which we already seem to be using pharmacological agents in a manner that can be understood as enhancing an agent’s autonomy. To make this argument, I begin by following other theorists in the philosophical literature in claiming that impulsivity can serve to undermine an agent’s autonomy. I then explain that we are already able to reduce impulsivity through the use of pharmacological interventions, as is evidenced by the use of Methylphenidate in the treatment of ADHD.
Posted by NELB Staff on 01/10/2015 at 05:59 PM | Permalink | Comments (0)
"Convergent Expert Views on Decision-Making for Decompressive Craniectomy in Malignant MCA Syndrome" by Daniel Mendelsohn, et. al., has been published in the most recent issue of Neuroethics:
Abstract
Background and Purpose
The decision to perform decompressive craniectomy for patients with malignant MCA syndrome can be ethically complex. We investigated factors that clinicians consider in this decision-making process.
Methods
A survey including clinical vignettes and attitudes questions surrounding the use of hemicraniectomy in malignant MCA syndrome was distributed to 203 neurosurgeons, neurologists, staff and residents, and nurses and allied health members specializing in the care of neurological patients. These were practicing health care providers situated in an urban setting in Canada where access to health care is covered by national policy and is a human right.
Results
Eighty-eight participants responded to survey. All participants unanimously supported the procedure for young and healthy patients. Advanced age, the presence of aphasia, comorbid medical conditions, and poor baseline functional status were dominant factors associated with increasing reluctance to offer surgical decompression. Patients’ previously expressed wishes were also an important consideration. Eighty-six percent of respondents agreed that withholding surgery is ethically justified if the outcome is perceived as futile.
Conclusions
Health care providers use similar factors to determine if aggressive management is justified given anticipated burden on patient quality of life and extended impact on society. This convergence can be harnessed beneficially for the transparent communication of medical options in the ethically complex setting of decompressive hemicraniectomy post-stroke.
Posted by NELB Staff on 01/08/2015 at 12:57 PM | Permalink | Comments (0)
"Cognitive Enhancement: Perceptions Among Parents of Children with Disabilities" by Natalie Ball and Gregor Wolbring has been published in the most recent issue of Neuroethics:
Abstract
Cognitive enhancement is an increasingly discussed topic and policy suggestions have been put forward. We present here empirical data of views of parents of children with and without cognitive disabilities. Analysis of the interviews revealed six primary overarching themes: meanings of health and treatment; the role of medicine; harm; the ‘good’ parent; normality and self-perception; and ability. Interestingly none of the parents used the term ethics and only one parent used the term moral twice.
Posted by NELB Staff on 01/06/2015 at 12:56 PM | Permalink | Comments (0)
"A Bio-Social and Ethical Framework for Understanding Fetal Alcohol Spectrum Disorders" by Carla Meurk, et. al, has been published in the most recent issue of Neuroethics
Abstract
The diagnosis of Fetal Alcohol Spectrum Disorders (FASDs) is embedded in a matrix of biological, social and ethical processes, making it an important topic for crossdisciplinary social and ethical research. This article reviews different branches of research relevant to understanding how FASD is identified and defined and outlines a framework for future social and ethical research in this area. We outline the character of scientific research into FASD, epidemiological discrepancies between reported patterns of maternal alcohol consumption during pregnancy and the incidence of FASD, and the social and ethical considerations that may impact on who is, and is not, diagnosed. We highlight what further research investigating FASD diagnostic processes, as well as the multi-generational impacts of FASD, is needed. Important research priorities are to: 1) enumerate the variety of stakeholders involved in seeking FASD diagnoses; 2) understand the experiences and perspectives of mothers from different backgrounds who have consumed alcohol during pregnancy and their affected children; and 3) collect health histories of maternal alcohol consumption in families to determine the effect of FASD at sub-cultural and cultural levels.
Posted by NELB Staff on 01/04/2015 at 12:54 PM | Permalink | Comments (0)
"Punishing Adolescents—On Immaturity and Diminished Responsibility" by Jesper Ryberg has been published in the most recent issue of Neuroethics:
Abstract
Should an adolescent offender be punished more leniently than an adult offender? Many theorists believe the answer to be in the affirmative. According to the diminished culpability model, adolescents are less mature than adults and, therefore, less responsible for their wrongdoings and should consequently be punished less harshly. This article concerns the first part of the model: the relation between immaturity and diminished responsibility. It is argued that this relation faces three normative challenges which do not allow for easy answers and which are still widely ignored in the comprehensive discussion of the diminished culpability model.
Posted by NELB Staff on 01/02/2015 at 12:52 PM | Permalink | Comments (0)