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)

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 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)

Optogenetics is an invasive neuromodulation technology involving the use of light to control the activity of individual neurons. Even though optogenetics is a relatively new neuromodulation tool whose various implications have not yet been scrutinized, it has already been approved for its first clinical trials in humans. As optogenetics is being intensively investigated in animal models with the aim of developing novel brain stimulation treatments for various neurological and psychiatric disorders, it appears crucial to consider both the opportunities and dangers (...) such therapies may offer. In this review, we focus on the memory-modifying potential of optogenetics, investigating what it is capable of and how it differs from other memory modification technologies. We then outline the safety challenges that need to be addressed before optogenetics can be used in humans. Finally, we re-examine crucial neuroethical concerns expressed in regard to other MMTs in the light of optogenetics and address those that appear to be unique to the memory-modifying potential of optogenetic technology. (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)

This paper proposes an integrated account of the etiology of OCD that accommodates both dysfunctional cognitions and sensorimotor features of compulsive action. It is argued that cognitive/metacognitive theories do not aspire to address all obsessive-compulsive phenomenal properties and that empirical evidence concerning some of these requires the incorporation of motor deficits as an independent factor in a plausible conception of OCD. The difference in agency attribution between obsessive-compulsive persons and schizophrenia patients with delusions of control is also accounted for in (...) terms of bottom-up processes. (shrink)

Affordances are possibilities for action offered by the environment. Recent research on affordances holds that there are differences in how people experience such possibilities for action. However, these differences have not been properly investigated. In this paper I start by briefly scrutinizing the existing literature on this issue, and then argue for two claims. First, that whether an affordance solicits action or not depends on its relevance to the agent’s concerns. Second, that the experiential character of how an affordance solicits (...) action depends on the character of the concern to which it is relevant. Concerns are conceived of as bodily forms of responsiveness, and solicitations are experienced through this responsiveness. The main aim of this paper is to make clear that an understanding of experiential differences in solicitations has to be based on a phenomenological appreciation of how one experiences one’s responsiveness to those solicitations. In the remainder of the paper I show how such a phenomenological appreciation reveals several characteristics of our responsiveness and I briefly explore three of them: valence, force and mineness. In the final section I discuss the self-referentiality of affordances in light of the current proposal, and argue that this self-referentiality is broader than is typically acknowledged. (shrink)

Family members can provide crucial support to individuals participating in clinical trials. In research on the “newest frontier” of Deep Brain Stimulation (DBS)—the use of DBS for psychiatric conditions—family member support is frequently listed as a criterion for trial enrollment. Despite the significance of family members, qualitative ethics research on DBS for psychiatric conditions has focused almost exclusively on the perspectives and experiences of DBS recipients. This qualitative study is one of the first to include both DBS recipients and their (...) family members as interview participants. Using dyadic thematic analysis—an approach that takes both the individuals and the relationship as units of analyses—this study analyzes the complex ways in which family relationships can affect DBS trial participation, and how DBS trial participation in turn influences family relationships. Based on these findings, we propose ways to improve study designs to better take family relationships into account, and better support family members in taking on the complex, essential roles that they play in DBS trials for psychiatric conditions. (shrink)

The ‘scaling up’ objection says non-representational ecological-enactive accounts will be unable to explain ‘representation hungry’ cognition. Obsessive-compulsive disorder presents a paradigmatic instance of this objection, marked as it is by ‘representation hungry’ obsessive thoughts and compulsive behavior organized around them. In this paper I provide an ecological-enactive account of OCD, thereby demonstrating non-representational frameworks can ‘scale up’ to explain ‘representation hungry’ cognition. First, I outline a non-representational account of mind— a predictive processing operationalization of Sean Kelly’s theory of perception. This (...) account explains the ‘tensions’ and ‘pulls’ which guide and constrain our action-oriented and affect-laden perceptual ‘grip’ upon the world to be underwritten by an imperative to minimize prediction error. I then argue that OCD is best understood as ‘grip gone awry’— malformed predictive models signal inappropriately high error, and this results in extremely strong ‘tensions’ and ‘pulls’ which prescribe actions. Thus, I arrive at the idea that OCD is primarily constituted by ‘not just right’ feelings caused by high error signaling. Finally, I explain that this account provides a causal explanation of the non-representational existential feeling fundamental to OCD. Compulsions are considered manifestations of non-representational grip responsive to this feeling, whilst obsessions are explained to play a meta-role in the condition, being formulated by subjects in a bid to make their ‘not just right’ feeling intelligible. I explain that the meta-role obsessions play makes their representational status largely irrelevant to OCD, and so leave this an open question. Consequently, I provide a non-representational account of OCD, thereby demonstrating that ecological-enactive approaches can respond to the ‘scaling up’ objection. (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)

Abstract: The notion of a self-pattern, as developed in the pattern theory of self, which holds that the self is best explained in terms of the kind of reality that pertains to a dynamical pattern, acknowledges the importance of neural dynamics, but also expands the account of self to extra-neural (embodied and enactive) dynamics. The pattern theory of self, however, has been criticized for failing to explicate the dynamical relations among elements of the self-pattern; as such, it seems to be (...) nothing more than a mere list of elements. We’ll argue that the dynamics of a self-pattern are reflected in three significant and interrelated ways that allow for investigation. First, a self-pattern is reflectively reiterated in its narrative component. Second, studies of psychiatric or neurological disorders can help us understand the precise nature of the dynamical relations in a self-pattern, and how they can fail. Third, referencing predictive processing accounts, neuroscience can also help to explicate the dynamical relations that constitute the self-pattern. (shrink)

Gilbert et al. argue that the neuroethics literature discussing the putative effects of Deep Brain Stimulation on personality largely ignores the scientific evidence and presents distorted claims that personality change is induced by the DBS stimulation. This study contributes to the first-hand primary research on the topic exploring DBS clinicians’ views on post-DBS personality change among their patients and its underlying cause. Semi-structured interviews were conducted with sixteen clinicians from various disciplines working in Australian DBS practice for movement disorders and/or (...) psychiatric conditions. Thematic analysis of the interviews revealed five primary themes: 1) types, frequency and duration of personality change, 2) causes of personality change, 3) impact on patient and family, 4) communication, comprehension and awareness, and 5) management. Clinicians described a variety of personality changes in Parkinson’s disease following DBS including irritability, impulsivity and impaired decision-making. The frequency of personality change seen in patients varied amongst clinicians, but changes were overwhelmingly transient. Clinicians considered both DBS stimulation and additional factors as inducing personality change. For DBS patients with major depressive disorder, a restoration of pre-morbid personality was associated with alleviation of illness. Considerations for future research of personality change following DBS include selecting suitable tools for quantitative examination and developing a common language between the scientific and ethics communities. Clinical implications including recommendations for the informed consent process for patients and families and clinicians’ management of personality change are discussed. (shrink)

Since the beginning of the current COVID-19 pandemic, specialists were concerned about the potential detrimental effects of physical distancing measures on well-being. Loneliness has been underscored as one of the most critical ones given the wide range of mental and physical health problems associated with it. Unlike social isolation, loneliness does not depend on social network size, so it can be experienced even if surrounded by others, or not be experienced at all even if one is alone. In this article, (...) I propose that the feeling of loneliness might result from a closure in a person’s affordance space, i.e., in the whole range of affordances that might stand out as relevant to an individual with a particular repertoire of habits and embedded within certain sociocultural practices. I will explore three possible sources of this closure during the current pandemic, as well as some ways in which people coped with loneliness. (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)

Epistemic emotions – namely affective phenomena like curiosity, certainty, and doubt – have been claimed to play a key role in epistemic evaluation and motivation, and, relatedly, to be an integral aspect of the epistemic virtues. In this paper I argue that the experience of epistemic emotions is extensively shaped by self-trust. More specifically, I claim that the set of epistemic emotions that we can undergo, and how these unfold over time, is modulated by the level of trust in one’s (...) abilities as a knower. I do so by drawing on research on epistemic injustice, as well as through the exploration of some features of obsessive-compulsive disorder (OCD) and depression. I then argue that the connection between epistemic emotions and self-trust can be best accounted for by conceiving of self-trust, through the framework of philosophical phenomenology, as an affective background orientation which has a structuring role in our cognitive and affective experience. (shrink)

Decisions about brain surgery pose existential challenges because they are often decisions about life or death, and sometimes about possible personality changes. Therefore they require rigorous neuroethical consideration. However, we doubt whether metaphysical interpretations of ambiguous statements of patients are useful for deriving ethical and legal conclusions. Particularly, we question the application of psychological theories of personal identity on neuroethical issues for several reasons. First, even the putative “standard view” on personal identity is contentious. Second, diverse accounts of personal identity (...) have been introduced into the neuroethical debate, which are incompatible. Third, the criteria for “diagnosing” the supposed changes in “identity” are ambiguous and indeterminate. Fourth, the metaphysical theories of personal identity imply highly questionable ethical and legal revisions, namely the denial of advance directives, particularly of Ulysses contracts, and, for patients with brain cancer, even therapeutic nihilism.We discuss three examples in which ideas from the personal identity debate in metaphysics are straightforwardly applied to discuss ethical issues of neurosurgery. We discuss revisions of the current medico-legal practice that have been proposed on grounds of psychological theories of personal identity. We argue that the established status quo in law and clinical practice is beneficial to the patients concerned. Furthermore, it is metaphysically neutral, which is an important principle of liberal, democratic, pluralistic societies.We recommend a pragmatic approach: empirical research on personality changes arising from brain disorders or interventions, comprehensive information about risks of personality changes, and advance directives, particularly Ulysses contracts. (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)

In the last 50 years, discussions of how to understand disability have been dominated by the medical and social models. Paradoxically, both models overlook the disabled person’s experience of the lived body, thus reducing the body of the disabled person to a physiological body. In this article we introduce what we call the Ecological-Enactive (EE) model of disability. The EE-model combines ideas from enactive cognitive science and ecological psychology with the aim of doing justice simultaneously to the lived experience of (...) being disabled, and the physiological dimensions of disability. More specifically, we put the EE model to work to disentangle the concepts of disability and pathology. We locate the difference between pathological and normal forms of embodiment in the person’s capacity to adapt to changes in the environment. To ensure that our discussion remains in contact with lived experience, we draw upon phenomenological interviews we have carried out with people with Cerebral Palsy. (shrink)

This paper explores the impacts of neurological intervention on selfhood with reference to recipients’ claims about changes to their self-understanding following Deep Brain Stimulation for treatment of Parkinson’s Disease. In the neuroethics literature, patients’ claims such as: “I don’t feel like myself anymore” and “I feel like a machine”, are often understood as expressing threats to identity. In this paper I argue that framing debates in terms of a possible threat to identity—whether for or against the proposition, is mistaken and (...) occludes what is ethically salient in changes from DBS. Rather, by adopting a relational narrative approach to identity and autonomy, I show that the ethically salient issue from DBS is impacts on autonomous agency—whether one’s actions and beliefs are one’s own, and how DBS may hinder, or foster, embodied, relational autonomy competences. This approach recognizes that if sufficiently significant, impacts on autonomy competences may pose a threat to one’s ability to contribute to the process of authoring one’s own life and so pose a threat to identity formation. I argue this approach resolves the confusion in the literature about whether and how DBS threatens identity and provides a complex picture of how DBS may affect selfhood by disrupting narrative identity formation and revision, distorting agency and/or undermining autonomy. (shrink)

One important concern regarding implantable Brain Computer Interfaces is the fear that the intervention will negatively change a patient’s sense of identity or agency. In particular, there is concern that the user will be psychologically worse-off following treatment despite postoperative functional improvements. Clinical observations from similar implantable brain technologies, such as deep brain stimulation, show a small but significant proportion of patients report feelings of strangeness or difficulty adjusting to a new concept of themselves characterized by a maladaptive je ne (...) sais quoi despite clear motor improvement. Despite the growing number of cases in the DBS literature, there is currently no accepted or standardized tool in neuroethics specifically designed to capture the phenomenological postoperative experience of patients implanted with DBS or BCI devices. Given potential risks of postoperative maladaptation, it is important for the field of neuroethics to develop a qualitative instrument that can serve as a shared method for capturing postoperative variations in patient experience of identity and agency. The goal of this article is to introduce an instrument we have developed for this purpose and call for further neuroethical efforts to assess the phenomenology of implantable brain device use. (shrink)

Despite growing evidence that a significant number of patients living with Parkison’s disease experience neuropsychiatric changes following Deep Brain Stimulation treatment, the phenomenon remains poorly understood and largely unexplored in the literature. To shed new light on this phenomenon, we used qualitative methods grounded in phenomenology to conduct in-depth, semi-structured interviews with 17 patients living with Parkinson’s Disease who had undergone DBS. Our study found that patients appear to experience postoperative DBS-induced changes in the form of self-estrangement. Using the insights (...) from patients’ subjective perceptions of postoperative self-change provides a potent explanation of potential DBS-induced self-estrangement. (shrink)

In this article, we sketch how theoretical neuroethics can clarify the concept of autonomy. We hope that this can both serve as a model for the conceptual clarification of other components of PIAAAS and contribute to the development of the empirical measures that Gilbert and colleagues [1] propose.

Despite technological innovations, clinical expertise remains the cornerstone of psychiatry. A clinical expert does not only have general textbook knowledge, but is sensitive to what is demanded for the individual patient in a particular situation. A method that can do justice to the subjective and situation-specific nature of clinical expertise is ethnography. Effective deep brain stimulation (DBS) for obsessive-compulsive disorder (OCD) involves an interpretive, evaluative process of optimizing stimulation parameters, which makes it an interesting case to study clinical expertise. The (...) aim of this study is to explore the role of clinical expertise through an ethnography of the particular case of DBS optimization in OCD. In line with the topic of the special issue this article is a part of, we will also use our findings to reflect on ethnography as a method to study complex phenomena like clinical expertise. This ethnography of DBS optimization is based on 18 months of participant observation and nine in-depth interviews with a team of expert clinicians who have been treating over 80 OCD patients since 2005. By repeatedly observing particular situations for an extended period of time, we found that there are recurrent patterns in the ways clinicians interact with patients. These patterns of clinical practice shape the possibilities clinicians have for making sense of DBS-induced changes in patients’ lived experience and behavior. Collective established patterns of clinical practice are dynamic and change under the influence of individual learning experiences in particular situations, opening up new possibilities and challenges. We conclude that patterns of clinical practice and particular situations are mutually constitutive. Ethnography is ideally suited to bring this relation into view thanks to its broad temporal scope and focus on the life-world. Based on our findings, we argue that clinical expertise not only implies skillful engagement with a concrete situation but also with the patterns of clinical practice that shape what is possible in this specific situation. Given this constraining and enabling role of practices, it is important to investigate them in order to find ways to improve diagnostic and therapeutic possibilities. (shrink)