The aims of this paper are to: (1) identify the best framework for comprehending multidimensional impact of deep brain stimulation on the self; (2) identify weaknesses of this framework; (3) propose refinements to it; (4) in pursuing (3), show why and how this framework should be extended with additional moral aspects and demonstrate their interrelations; (5) define how moral aspects relate to the framework; (6) show the potential consequences of including moral aspects on evaluating DBS’s impact on patients’ selves. Regarding (...) (1), I argue that the pattern theory of self can be regarded as such a framework. In realizing (2) and (3), I indicate that most relevant issues concerning PTS that require resolutions are ontological issues, including the persistence question, the “specificity problem”, and finding lacking relevant aspects of the self. In realizing (4), I identify aspects of the self not included in PTS which are desperately needed to investigate the full range of potentially relevant DBS-induced changes—authenticity, autonomy, and responsibility, and conclude that how we define authenticity will have implications for our concept of autonomy, which in turn will determine how we think about responsibility. Concerning (5), I discuss a complex relation between moral aspects and PTS—on one hand, they serve as the lens through which a particular self-pattern can be evaluated; on the other, they are, themselves, products of dynamical interactions of various self-aspects. Finally, I discuss (6), demonstrating novel way of understanding the effects of DBS on patients’ selves. (shrink)

Deep Brain Stimulation (DBS) is an invasive therapeutic method involving the implantation of electrodes and the electrical stimulation of specific areas of the brain to modulate their activity. DBS brings therapeutic benefits, but can also have adverse side effects. Recently, neuroethicists have recognized that DBS poses a threat to the very fabric of human existence, namely, to the selves of patients. This article provides a review of the neuroethical literature examining this issue, and identifies the crucial dimensions related to the (...) self which DBS may endanger—personal identity, authenticity, and autonomy. The most influential theories accounting for these dimensions are analyzed herein, and it is argued that most of these theories require further refinement. This paper also demonstrates the interrelation between personal identity, authenticity, and autonomy, and concludes that one can only fully understand the impact of DBS on the self when all of these factors are taken into account. (shrink)

Advances in prosthetic design should benefit people with limb difference. But empirical evidence demonstrates a lack of uptake of prosthetics among those with limb difference, including of advanced designs. Non-use is often framed as a problem of prosthetic design or a user’s response to prosthetics. Few studies investigate user experience and preferences, and those that do tend to address satisfaction or dissatisfaction with functional aspects of particular designs. This results in limited data to improve designs and, we argue, this is (...) pragmatically and ethically problematic. This paper presents results of a survey we conducted in 2017 with people with upper limb difference in Australia. The survey sought to further knowledge about preferences surrounding prosthetics and understanding of how preferences relate to user experience, perspective, and context. Survey responses demonstrated variety in the uptake, use and type of prosthetic—and that use of, preferences about, and impacts of prosthetics rely not just on design factors but on various contextual factors bearing on identity and social understandings of disability and prosthetic use. From these results, we argue that non-use of prosthetics could be usefully reframed as an issue of understanding how prosthetics can best support users’ autonomy. This supports the claim that there is a need to incorporate user engagement into design processes for prosthetic limbs, though further work is needed on methods for doing so. (shrink)

The ethical debate about neurotechnologies—including both drugs and implanted devices—has been largely framed around the questions of whether and when these technologies could damage or promote authenticity. Patients can experience changes in mood, behavior, emotion, or preferences—seemingly, changes in character or personality. Some describe such changes by saying they feel like different people; that they have become either more or less themselves; or that they feel as though some of their moods, behaviors, emotions or preferences are not their own. These (...) kinds of statements are used to describe both changes that a drug or device is... (shrink)

There is evidence to suggest that some patients who undergo Deep Brain Stimulation can experience changes to dispositional, emotional and behavioural states that play a central role in conceptions of personality, identity, autonomy, authenticity, agency and/or self. For example, some patients undergoing DBS for Parkinson’s Disease have developed hypersexuality, and some have reported increased apathy. Moreover, experimental psychiatric applications of DBS may intentionally seek to elicit changes to the patient’s dispositional, emotional and behavioural states, in so far as dysfunctions in (...) these states may undergird the targeted disorder. Such changes following DBS have been of considerable interest to ethicists, but there is a considerable degree of conflict amongst different parties to this debate about whether DBS really does change PIAAAS, and whether this matters. This paper explores these conflicting views and suggests that we may be able to mediate this conflict by attending more closely to what parties to the debate mean when they invoke the concepts lumped together under the acronym PIAAAS. Drawing on empirical work on patient attitudes, this paper outlines how these different understandings of the concepts incorporated into PIAAAS have been understood in this debate, and how they may relate to other fundamental concepts in medical ethics such as well-being and autonomy. The paper clarifies some key areas of disagreement in this context, and develops proposals for how ethicists might fruitfully contribute to future empirical assessments of apparent changes to PIAAAS following DBS treatment. (shrink)

The profound changes in personality, mood, and other features of the self that neural interventions can induce can be disconcerting to patients, their families, and caregivers. In the neuroethical debate, these concerns are often addressed in the context of possible threats to the narrative self. In this paper, I argue that it is necessary to consider a dimension of impacts on the narrative self which has so far been neglected: neural interventions can lead to a loss of meaning of actions, (...) feelings, beliefs, and other intentional elements of our self-narratives. To uphold the coherence of the self-narrative, the changes induced by neural interventions need to be accounted for through explanations in intentional or biochemical terms. However, only an explanation including intentional states delivers the content to directly ascribe personal meaning, i.e., subjective value to events. Neural interventions can deprive events of meaning because they may favor a predominantly biochemical account. A loss of meaning is not inherently negative but it can be problematic, particularly if events are affected one was not prepared or willing to have stripped of meaning. The paper further examines what it is about neural interventions that impacts meaning by analyzing different methods. To which degree the pull towards a biochemical view occurs depends on the characteristics of the neural intervention. By comparing Deep Brain Stimulation, Prozac, Ritalin, psychedelics, and psychotherapy, the paper identifies some main factors: the rate of change, the transparency of the causal chain, the involvement of the patient, and the presence of an acute phenomenological experience. (shrink)

The potential of memory modification techniques (MMTs) has raised concerns and sparked a debate in neuroethics, particularly in the context of identity and authenticity. This paper addresses the question whether and how MMTs influence authenticity. I proceed by drawing two distinctions within the received views on authenticity. From this, I conclude that an analysis of MMTs based on a dual-basis, process view of authenticity is warranted, which implies that the influence of MMTs on authenticity crucially depends on the specifics of (...) how memory modification would eventually work. Therefore, I continue with a systematic analysis of possible properties of MMTs in which I distinguish between the dimensions of memories and the kinds of experiences that can be modified as well as the properties of the process of memory modification. The impact of MMTs on authenticity is analyzed regarding the possible properties of MMTs and based on a narrative approach to authenticity which fulfills the requirements of a dual-basis, process view of authenticity. Lastly, I explore the potential of MMTs to shift the balance between self-discovery and self-creation within authenticity and thereby alter the concept itself as well as the value of authenticity. (shrink)

Novel neurotechnologies, like deep brain stimulation and brain‐computer interface, offer great hope for treating, curing, and preventing disease, but raise important questions about effects these devices may have on human identity, authenticity, and autonomy. After briefly assessing recent narrative work in these areas, we show that agency is a phenomenon key to all three goods and highlight the ways in which neural devices can help to draw attention to the relational nature of our agency. Drawing on insights from disability theory, (...) we argue that neural devices provide a kind of agential assistance, similar to that provided by caregivers, family, and others. As such, users and devices participate in a kind of co‐agency. We conclude by suggesting the need for developing relational agency‐competencies—skills for reflecting on the influence of devices on agency, for adapting to novel circumstances ushered in by devices, and for incorporating the feedback of loved ones and others about device effects on agency. (shrink)

Bioethics has already had a rich interaction with the relatively new field of neurotechnology. Scholars have wondered whether neurotechnological interventions, such as deep brain stimulation, are threats to personal identity, lead to alienation or create dilemmas between authenticity and autonomy, impact autonomy, detract from agency, or lead to self-estrangement. Many of these ethical investigations are concerned not with the targeted health benefits of neurotechnology but with whether and how they fit into users' lives in more personal and profound ways.In some (...) ways, this focus on general bioethical issues... (shrink)

The idea that deep brain stimulation (DBS) induces changes to personality, identity, agency, authenticity, autonomy and self (PIAAAS) is so deeply entrenched within neuroethics discourses that it has become an unchallenged narrative. In this article, we critically assess evidence about putative effects of DBS on PIAAAS. We conducted a literature review of more than 1535 articles to investigate the prevalence of scientific evidence regarding these potential DBS-induced changes. While we observed an increase in the number of publications in theoretical neuroethics (...) that mention putative DBS-induced changes to patients’ postoperative PIAAAS, we found a critical lack of primary empirical studies corroborating these claims. Our findings strongly suggest that the theoretical neuroethics debate on putative effects of DBS relies on very limited empirical evidence and is, instead, reliant on unsubstantiated speculative assumptions probablyin lieuof robust evidence. As such, this may reflect the likelihood of a speculative neuroethics bubble that may need to be deflated. Nevertheless, despite the low number of first-hand primary studies and large number of marginal and single case reports, potential postoperative DBS changes experienced by patients remain a critical ethical concern. We recommend further empirical research in order to enhance theoretical neuroethics work in the area. In particular, we call for the development of better instruments capable of capturing potential postoperative variations of PIAAAS. (shrink)

Owing to an oversight, we noted that the acknowledgement section was missing from the original published version of this paper.

The article Deflating the "DBS causes personality changes" bubble, written by Frederic Gilbert, J. N. M. Viaña and C. Ineichen, was originally published electronically on the publisher’s internet portal on 19 June 2018 without open access.

Questions about the nature of self and self-consciousness are closely aligned with questions about the nature of autonomy. These concepts have deep roots in traditional philosophical discussions that concern metaphysics, epistemology and ethics. They also have direct relevance to practical considerations about informed consent in medical contexts. In this paper, with reference to understanding specific side effects of deep brain stimulation treatment in cases of, for example, Parkinson’s Disease, Obsessive Compulsive Disorder, and Major Depressive Disorder, I’ll argue that it is (...) best to frame discussions of informed consent in terms of relational autonomy and a pattern theory of self. (shrink)

Neuromodulation and narrative identity: the importance of relational autonomyIn this paper, I discuss the impact of psychological and relational changes after neuromodulation for movement- and psychiatric disorders and the need to adequately address the possibility of such changes in clinical contexts. Based on ), ) and ), I outline a relational narrative identity perspective that can inform and support medical-ethical decisions. The narrative identity theory by Marya Schechtman in combination with a focus on the relational aspects that impact and constitute (...) our identity, highlights the need to identify post-interventional identity changes both from the perspective of the patient, his or her family and loved ones and the medical team. I argue that a thorough informed consent process pre- and post-intervention and adequate psychological counseling allows for such identification and a step by step monitoring and guiding of the patient in this process. From a relational narrative perspective, neuromodulation does not by default pose a threat to our identity. However, this perspective highlights the need to take the relational autonomy of patients seriously and provide a substantial informed consent procedure and adequate psychological counseling. (shrink)

The article provides a conceptualization of self(-illness) ambiguity and investigates to what extent self(-illness) ambiguity is ‘special’. First, we draw on empirical findings to argue that self-ambiguity is a ubiquitous phenomenon. We suggest that these findings are best explained by a multidimensional account, according to which selves consist of various dimensions that mutually affect each other. On such an account, any change to any particular self-aspect may change other self-aspects and thereby alter the overall structural pattern of self-aspects, potentially leading (...) to self-ambiguity. Second, we propose that self-ambiguity comes in degrees and should be understood as a spectrum (as opposed to there being qualitative differences among instances of self-ambiguity). Third, we argue that complexity is the most useful dimension to organize cases of self-ambiguity, with mundane instances of self-ambiguity on the one end and self-illness ambiguity on the other end of the spectrum. Fourth, we address the promises and perils of narrativity with regard to self-ambiguity. Finally, we link our deflationary account of self(-illness) ambiguity to pattern theories of self. (shrink)

The article provides a conceptualization of self(-illness) ambiguity and investigates to what extent self(-illness) ambiguity is ‘special’. First, we draw on empirical findings to argue that self-ambiguity is a ubiquitous phenomenon. We suggest that these findings are best explained by a multidimensional account, according to which selves consist of various dimensions that mutually affect each other. On such an account, any change to any particular self-aspect may change other self-aspects and thereby alter the overall structural pattern of self-aspects, potentially leading (...) to self-ambiguity. Second, we propose that self-ambiguity comes in degrees and should be understood as a spectrum (as opposed to there being qualitative differences among instances of self-ambiguity). Third, we argue that complexity is the most useful dimension to organize cases of self-ambiguity, with mundane instances of self-ambiguity on the one end and self-illness ambiguity on the other end of the spectrum. Fourth, we address the promises and perils of narrativity with regard to self-ambiguity. Finally, we link our deflationary account of self(-illness) ambiguity to pattern theories of self. (shrink)

Background: Psychiatric interventions are a contested area in medicine, not only because of their history of abuses, but also because their therapeutic goal is to affect emotions, thoughts, beliefs...

Deep Brain Stimulation is an FDA-approved treatment for the symptoms of Parkinson's disease, essential tremor, dystonia, and epilepsy—with experimental use for mood disorders. DBS systems consist of a signal generator, typically implanted in the user's chest, that sends impulses to electrodes implanted in select areas of the user's brain. These signals change the activity of areas of the brain associated with unwanted symptoms. Several research groups have begun trials to use DBS as a treatment for psychiatric disorders. DBS, however, comes (...) with a... (shrink)

A number of reports have suggested that patients who undergo deep brain stimulation may experience changes to their personality or sense of self. These reports have attracted great philosophical interest. This paper surveys the philosophical literature on personal identity and DBS and draws on an emerging empirical literature on the experiences of patients who have undergone this therapy to argue that the existing philosophical discussion of DBS and personal identity frames the problem too narrowly. Much of the discussion by neuroethicists (...) centers on the nature of the threat posed by DBS, asking whether it is best understood as a threat to personal identity, autonomy, agency, or authenticity, or as putting patients at risk of self-estrangement. Our aim in this paper is to use the empirical literature on patients’ experiences post-DBS to open up a broader range of questions - both philosophical and practical, and to suggest that attention to these questions will help to provide better support to patients, both before and after treatment. (shrink)

Deep brain stimulation (DBS) uses electrodes implanted in the brain to modulate dysregulated brain activity related to a variety of neurological and psychiatric conditions. A number of people who use DBS have reported changes that affect their sense of self. In the neuroethics literature, there has been significant debate over the exact nature of these changes. More recently, there have been suggestions that this debate is overblown and detracts from clinically-relevant ways of understanding these effects of DBS. In this paper, (...) we offer an alternative approach to understanding the effects of DBS on the self, drawing on John Sadler’s work on self-illness ambiguity. We argue that self-illness ambiguity is a complex concept, with at least three different aspects, and that each of the three aspects we identify also characterizes one kind of DBS-related change. Our analysis also suggests ways of helping patients to adjust to life as a DBS user. (shrink)

Deep brain stimulation (DBS) uses electrodes implanted in the brain to modulate dysregulated brain activity related to a variety of neurological and psychiatric conditions. A number of people who use DBS have reported changes that affect their sense of self. In the neuroethics literature, there has been significant debate over the exact nature of these changes. More recently, there have been suggestions that this debate is overblown and detracts from clinically-relevant ways of understanding these effects of DBS. In this paper, (...) we offer an alternative approach to understanding the effects of DBS on the self, drawing on John Sadler’s work on self-illness ambiguity. We argue that self-illness ambiguity is a complex concept, with at least three different aspects, and that each of the three aspects we identify also characterizes one kind of DBS-related change. Our analysis also suggests ways of helping patients to adjust to life as a DBS user. (shrink)