The history of brain-computer interfaces developed from a mere idea in the days of early digital technology to today’s highly sophisticated approaches for signal detection, recording, and analysis. In the 1960s, electroencephalography was tied to the laboratory due to equipment and recording requirements. Today, amplifiers exist that are built in the electrode cap and are so resistant to movement artefacts that data collection in the field is no longer a critical issue. Within 60 years, the field has moved from simple (...) and artefact-sensitive EEG recording to making real the vision of brain-computer communication. In the last 40 years, direct brain-computer interaction went from simple communication programs to sophisticated BCI-controlled applications. In the past two decades, much research was conducted with locked-in individuals, and since the 2010s, independent home use by exemplary patients has been demonstrated. In these patients with locked-in syndrome, BCI were installed at their home and long-term usage was established, resulting in increased quality of life. Maintaining communication in disorders leading to LIS contributes significantly to the patients’ sense of being full persons. BCI as an assistive technology will likely be perceived as integral part of the self: insofar as it can prevent total loss of communication and the ensuing social isolation, it enables essential conditions for the subjective and intersubjective experience of personhood. (shrink)

Recent studies indicate that patients who are diagnosed with vegetative states may retain more awareness than their clinical assessments suggest. Disorders of consciousness traditionally have been diagnosed on the basis of outwardly observable behaviors alone, but new functional imaging studies have shown surprising levels of brain activity in some patients, indicating that even higher-level cognitive functions like language processing and visual imagery may be preserved. For example, one recently developed method purports to detect voluntary mental imagery solely on the basis (...) of neural response patterns observed with functional magnetic resonance imaging. This line of research has already led to some widely reported cases of patients who were discovered to have more brain activity than expected. In November 2009, Rom Houben, a Belgian man who was thought to be in a coma for 23 years, was diagnosed with locked-in syndrome through the use of neuroimaging; however, that assessment was later overturned by further testing. (shrink)

Abstract In a recent issue of Neuroethics , I considered whether the notion of human dignity could help us in solving the moral problems the advent of the diagnostic category of minimally conscious state (MCS) has brought forth. I argued that there is no adequate account of what justifies bestowing all MCS patients with the special worth referred to as human dignity. Therefore, I concluded, unless that difficulty can be solved we should resort to other values than human dignity in (...) addressing the moral problems MCS poses. In his new book Christopher Kaczor criticizes the argument I put forward. Below, I respond to Kaczor’s criticism. I maintain that the considerations he presents do not undermine my argument nor succeed in providing adequate justification for the view that all MCS patients possess the worth referred to as human dignity. Content Type Journal Article Category Original Paper Pages 1-11 DOI 10.1007/s12152-011-9147-z Authors Jukka Varelius, Department of Behavioural Sciences and Philosophy, University of Turku, Turku, 20014 Finland Journal Neuroethics Online ISSN 1874-5504 Print ISSN 1874-5490. (shrink)

I argue that a version of Pascal's Wager applies to the persistent vegetative state with sufficient force that it ought to part of advance directives.

BackgroundFunctional neurodiagnostics could allow researchers and clinicians to distinguish more accurately between the unresponsive wakefulness syndrome and the minimally conscious state. It remains unclear how it informs surrogate decision-making.ObjectiveTo explore how the next of kin of patients with disorders of consciousness interpret the results of a functional neurodiagnostics measure and how/why their interpretations influence their attitudes towards medical decisions.Methods and SampleWe conducted problem-centered interviews with seven next of kin of patients with DOC who had undergone a functional HD-EEG examination at (...) a neurological rehabilitation center in Germany. The examination included an auditory oddball paradigm and a motor imagery task to detect hidden awareness. We analyzed the interview transcripts using structuring qualitative content analysis.ResultsRegardless of the diagnostic results, all participants were optimistic of the patients’ meaningful recovery. We hypothesize, that participants deal with the results of examinations according to their belief system. Thus, an unfavorable evaluation of the patient’s state had the potential to destabilize the participant’s belief system. To re-stabilize or to prevent the destabilization of their belief system, participants used different strategies. Participants accepted a “positive” HD-EEG result since it stabilized their belief system.ConclusionWe hypothesize, that a group of next of kin of patients with DOC deals with functional neurodiagnostics results on the basis of the result’s value and their high hope that the patient will recover meaningfully. A psychological mechanism seems to moderate the impact of functional neurodiagnostics on surrogate treatment decisions. (shrink)

The recent ruling from England on the case of M is one of very few worldwide to consider whether life-sustaining treatment, in the form of clinically assisted nutrition and hydration, should continue to be provided to a patient in a minimally conscious state. Formally concerned with the English law pertaining to precedent autonomy (specifically advance decision-making) and the best interests of the incapacitated patient, the judgment issued in M's case implicitly engages with three different accounts of the value of human (...) life, which respectively emphasise its self-determined, intrinsic and instrumental value. The judge appeared to be most persuaded by the intrinsic value of life and he concluded that treatment ought to continue. Assessing whether his approach or conclusion were ethically appropriate involves significant substantive and evidential questions regarding where the burden of proof should lie and what standard of proof should be required when decisions are to be made about the fates of patients inhabiting ‘twilight worlds’. (shrink)

Chronic disorders of consciousness, particularly the vegetative and the minimally conscious states, pose serious diagnostic challenges to neurologists and clinical psychologists. A look at the concept of “diagnosis” in medicine reveals its social construction: While medical categorizations are intended to describe facts in the real world, they are nevertheless dependent on conventions and agreements between experts and practitioners. For chronic disorders of consciousness in particular, the terminology has proven problematic and controversial over the years. Novel research utilizing functional brain imaging (...) has demonstrated that a substantial number of patients retain their capabilities to communicate by brain activity even when they are incapable of classic verbal and nonverbal responses due to the dysfunction of their motor behavior. Moreover, thorough diagnostic assessments constitute the foundations for suitable rehabilitation measures. Thus, ethical arguments support the claim that the potential of emerging methods for communication via brain activity should be evaluated comprehensively in patients with chronic disorders of consciousness, once the technological methodology for this endeavor progresses to a reliable and affordable stage. (shrink)

Pain, suffering and positive emotions in patients in vegetative state/unresponsive wakefulness syndrome (VS/UWS) and minimally conscious states (MCS) pose clinical and ethical challenges. Clinically, we evaluate behavioural responses after painful stimulation and also emotionally-contingent behaviours (e.g., smiling). Using stimuli with emotional valence, neuroimaging and electrophysiology technologies can detect subclinical remnants of preserved capacities for pain which might influence decisions about treatment limitation. To date, no data exist as to how healthcare providers think about end-of-life options (e.g., withdrawal of artificial nutrition (...) and hydration) in the presence or absence of pain in non-communicative patients. Here, we aimed to better clarify this issue by re-analyzing previously published data on pain perception (Prog Brain Res 2009 177, 329–38) and end-of-life decisions (J Neurol 2010 258, 1058–65) in patients with disorders of consciousness. In a sample of 2259 European healthcare professionals we found that, for VS/UWS more respondents agreed with treatment withdrawal when they considered that VS/UWS patients did not feel pain (77%) as compared to those who thought VS/UWS did feel pain (59%). This interaction was influenced by religiosity and professional background. For MCS, end-of-life attitudes were not influenced by opinions on pain perception. Within a contemporary ethical context we discuss (1) the evolving scientific understandings of pain perception and their relationship to existing clinical and ethical guidelines; (2) the discrepancies of attitudes within (and between) healthcare providers and their consequences for treatment approaches, and (3) the implicit but complex relationship between pain perception and attitudes toward life-sustaining treatments. (shrink)

The clinical and para-clinical examination of residual self-consciousness in non-communicative severely brain damaged patients remains exceptionally challenging. Passive presentation of the patient’s own name and own face are known to be effective attention-grabbing stimuli when clinically assessing consciousness at the patient’s bedside. Event-related potential and functional neuroimaging studies using such self-referential stimuli are currently being used to disentangle the cognitive hierarchy of self-processing. We here review neuropsychological, neuropathological, electrophysiological and neuroimaging studies using the own name and own face paradigm obtained (...) in conscious waking, sleep, pharmacological coma, pathological coma and related disorders of consciousness. Based on these results we discuss what we currently do and do not know about the functional significance of the neural network involved in “automatic” and “conscious” self-referential processing. (shrink)

A pressing issue in neuroscience is the high rate of misdiagnosis of disorders of consciousness. As new research on patients with disorders of consciousness has revealed surprising and previously unknown cognitive capacities, the need to develop better and more reliable methods of diagnosing these disorders becomes more urgent. So too the need to expand our ethical and social frameworks for thinking about these patients, to accommodate new concerns that will accompany new revelations. A recent study on trace conditioning and learning (...) in vegetative and minimally conscious patients shows promise as a potential diagnostic and prognostic tool, both for differentiating between states of diminished consciousness, and for predicting patient outcomes, but it also generates fresh concerns about quality of life in patients previously thought to be completely unaware. Optimism about progress in diagnosing and treating disorders of consciousness must be tempered by the understanding that not all progress will necessarily be good for all patients. The prognosis for most patients remains bleak, and we must remain vigilant to acute questions and concerns about welfare and quality of life. (shrink)

Recent progress in neurosciences has improved our understanding of chronic disorders of consciousness. One example of this advancement is the emergence of the new diagnostic category of minimally conscious state (MCS). The central characteristic of MCS is impaired consciousness. Though the phenomenon now referred to as MCS pre-existed its inclusion in diagnostic classifications, the current medical ethical concepts mainly apply to patients with normal consciousness and to non-conscious patients. Accordingly, how we morally should stand with persons in minimally conscious state (...) remains unclear. In this paper, I examine whether the notion of human dignity could provide us with guidance with the moral difficulties MCS gives rise to. More precisely, I focus on the question of whether we are justified in holding that persons in minimally conscious state possess human dignity. (shrink)

There is no systematic knowledge about how individuals with Locked-in Syndrome experience their situation. A phenomenology of LIS, in the sense of a description of subjective experience as lived by the ill persons themselves, does not yet exist as an organized endeavor. The present article takes a step in that direction by reviewing various materials and making some suggestions. First-person narratives provide the most important sources, but very few have been discussed. LIS barely appears in bioethics and neuroethics. Research on (...) Quality of Life provides relevant information, one questionnaire study explores the sense of personal continuity in LIS patients, and LIS has been used as a test case of theories in “embodied cognition” and to explore issues in the phenomenology of illness and communication. A systematic phenomenology of LIS would draw on these different areas: while some deal directly with subjective experience, others throw light on its psychological, sociocultural and materials conditions. Such an undertaking can contribute to the improvement of care and QOL, and help inform philosophical questions, such as those concerning the properties that define persons, the conditions of their identity and continuity, or the dynamics of embodiment and intersubjectivity. (shrink)

The False Claims Act, 31 U.S.C. § 3729, a post-Civil War law inspired by cases of defense contracting fraud, was revitalized in 1986. Since then it has been used to sue both manufacturers and providers of pharmaceuticals. In some cases, these suits were meant to target offlabel marketing of pharmaceuticals. In 2009, the 11th Circuit rendered a decision in Hopper v. Solvay Pharmaceuticals that dramatically limits the ability of private plaintiff whistle-blowers to bring qui tam suits under the FCA for (...) such marketing. In June 2010, the Supreme Court denied certiorari, making the Circuit court decision final. The Solvay decision creates a significant barrier to certain kinds of qui tam suits, requiring the plaintiff to demonstrate the intent to market off-label, including by showing specific prescriptions that were written as a result of efforts to do so. (shrink)

The “disability paradox” is the idea that for those who become severely disabled, their own quality of life assessment remains at or slightly below the QoL assessments of normal controls. This is a source of skepticism regarding third-person QoL judgments of the disabled. I argue here that this skepticism applies as well to those who are in the minimally conscious state. For rather simple means of sustaining an MCS patient’s life, the cost of being wrong that the patient would not (...) want further support is high. Pair this cost with the reason to be skeptical of third-person judgments, and my argument suggests not withholding food and water from MCS patients. (shrink)

An adaptation of Pascal’s Wager argument has been considered useful in deciding about the provision of life-sustaining treatment for patients in persistent vegetative state. In this article, I assess whether people making such decisions should resort to the application of Pascal’s idea. I argue that there is no sufficient reason to give it an important role in making the decisions.

The intriguing issue of pain and suffering in patients with disorders of consciousness (DOCs), particularly in Unresponsive Wakefulness Syndrome/Vegetative State (UWS/VS) and Minimally Conscious State (MCS), is assessed from a theoretical point of view, through an overview of recent neuroscientific literature, in order to sketch an ethical analysis. In conclusion, from a legal and ethical point of view, formal guidelines and a situationist ethics are proposed in order to best manage the critical scientific uncertainty about pain and suffering in DOCs (...) and ensure the best possible care for the patient. (shrink)

Our ethical obligations to another being depend at least in part on that being’s capacity for a mental life. Our usual approach to inferring the mental state of another is to reason by analogy: If another being behaves as I do in a circumstance that engenders a certain mental state in me, I conclude that it has engendered the same mental state in him or her. Unfortunately, as philosophers have long noted, this analogy is fallible because behavior and mental states (...) are only contingently related. If the other person is acting, for example, we could draw the wrong conclusion about his or her mental state. In this article I consider another type of analogy that can be drawn between oneself and another to infer the mental state of the other, substituting brain activity for behavior. According to most current views of the mind–body problem, mental states and brain states are non-contingently related, and hence inferences drawn with the new analogy are not susceptible to the alternative interpretations that plague the behavioral analogy. The implications of this approach are explored in two cases for which behavior is particularly unhelpful as a guide to mental status: severely brain–damaged patients who are incapable of intentional communicative behavior, and nonhuman animals whose behavioral repertoires are different from ours and who lack language. (shrink)

Walter Freeman, the self styled neurosurgeon, became famous (or infamous) for psychosurgery. The operation of frontal leucotomy swept through the world (with Freeman himself performing something like 18,000 cases) but it has tainted the whole idea of psychosurgery down to the present era. Modes of psychosurgery such as Deep Brain Stimulation and other highly selective neurosurgical procedures for neurological and psychiatric conditions are in ever-increasing use in current practice. The new, more exciting techniques are based in a widely held philosophical (...) position on the relationship between the mind, brain and soul, which is the key to ethical debates in this area. Psychosurgery has always posed questions of responsibility, personality, character, identity, spirit, relationship, integrity, and human flourishing and they do not go away when we enter the brave new world of neuroethics and Deep Brain Stimulation. (shrink)

In 1993, the UK High Court decided that Tony Bland was unaware of himself and his environment, had no interest in medical treatment and allowed withdrawal of treatment. Subsequently, the court has reviewed all cases of stopping feeding and hydration in people with a prolonged disorder of consciousness. Their focus has been on determining whether the person is in the permanent vegetative state, because this avoids considering what is in a person9s Best Interests. Consequently, much resource is spent distinguishing the (...) vegetative state from the minimally conscious state and often clinical decisions are delayed or not made because of the requirement to go to court. In this paper, I argue that the neurophysiological basis of consciousness is unknown, and one cannot test whether the necessary structures are functioning. Unconscious people have responsiveness which varies; they may even have brief behaviours suggestive of awareness. No single clinical sign or investigation nor assessment battery can prove the presence (or absence) of consciousness or its permanence. The diagnosis of consciousness is clinical. Furthermore, awareness varies across a spectrum. There is no separate vegetative state. People simply have very limited or absent awareness. Even if there were such a state, it cannot be identified. The ethical and legal issues associated with decisions on treatment of unconscious people are no different from similar decisions in other patients. All decisions should be taken within the Best Interests framework and process. There should be no requirement to take any particular decision to court in this patient group. (shrink)

In a recent issue of Neuroethics, I considered whether the notion of human dignity could help us in solving the moral problems the advent of the diagnostic category of minimally conscious state (MCS) has brought forth. I argued that there is no adequate account of what justifies bestowing all MCS patients with the special worth referred to as human dignity. Therefore, I concluded, unless that difficulty can be solved we should resort to other values than human dignity in addressing the (...) moral problems MCS poses. In his new book Christopher Kaczor criticizes the argument I put forward. Below, I respond to Kaczor’s criticism. I maintain that the considerations he presents do not undermine my argument nor succeed in providing adequate justification for the view that all MCS patients possess the worth referred to as human dignity. (shrink)

In the case of Re M, summarised in the paper by Julian Sheather, Justice Baker faced the difficult task of weighing up objectively whether or not it was in Mâs best interests to withdraw artificial feeding and to let her die.1 The judge concluded that M was ârecognisably aliveâ, and that the advantages of continued life outweighed the disadvantages. He compared her minimally conscious state favourably to that of a persistent vegetative state .2 It was clear that artificial feeding would (...) have been withdrawn if she had been in a PVS , but because she was in fact minimally conscious, the judge decided that treatment must continue. But does it make sense to treat MCS differently from PVS in this way? Is it better to be minimally conscious than unconscious? Similar questions have been raised before.3 In 2006, scientists reported results of sophisticated neuroimaging studies which suggested that some patients in persistent vegetative state , long thought to be unaware, had evidence of minimal consciousness.4 The question then was on the moral significance of this level of consciousness, and whether the presence of such evidence meant that treatment such as artificial nutrition must be continued.5 ,6There are several potential reasons why the presence of minimal consciousness might warrant continuing life-sustaining treatment. The first is that patients in minimally conscious state might have a better prognosis than those who are in PVS. There are relatively few studies …. (shrink)

Sale of Sperm, Health Records, Minimally Conscious States, and Duties of Candour Content Type Journal Article Category Recent Developments Pages 7-14 DOI 10.1007/s11673-011-9347-6 Authors Cameron Stewart, Centre for Health Governance, Law and Ethics, Sydney Law School, University of Sydney, Sydney, NSW, Australia 2006 Bernadette Richards, Law School, University of Adelaide, Adelaide, SA, Australia 5005 Richard Huxtable, Centre for Ethics in Medicine, University of Bristol, Bristol, BS8 1TH UK Bill Madden, School of Law, University of Western Sydney, Sydney, NSW, Australia Tina (...) Cockburn, School of Law, Queensland University of Technology, Brisbane, QLD, Australia Journal Journal of Bioethical Inquiry Online ISSN 1872-4353 Print ISSN 1176-7529 Journal Volume Volume 9 Journal Issue Volume 9, Number 1. (shrink)

Severe brain injury is a leading cause of death and disability. Following severe brain injury diagnosis is difficult and errors frequently occur. Recent findings in clinical neuroscience may offer a solution. Neuroimaging has been used to detect preserved cognitive function and awareness in some patients clinically diagnosed as being in a vegetative state. Remarkably, neuroimaging has also been used to communicate with some vegetative patients through a series of yes/no questions. Some have speculated that, one day, this method may allow (...) severely brain-injured patients to make medical decisions. Yet, skepticism is rife, due in part to the inherent difficulty of assessing decision-making capacity through neuroimaging communication. In this thesis, I provide the first systematic analysis of this problem. I present and defend a strategy for assessing decision-making capacity in brain-injured patients who can only communicate through neuroimaging. (shrink)

Measuring responsiveness to gain accurate diagnosis in populations with disorders of consciousness (DOC) is of central concern because these patients have such complex clinical presentations. Due to the uncertainty of accuracy for both behavioral and neurophysiological measures in DOC, combined assessment approaches are recommended. A number of standardized behavioral measures can be used with adults with DOC with minor to moderate reservations relating to the measures’ psychometric properties and clinical applicability. However, no measures have been standardized for use with pediatric (...) DOC populations. When adapting adult measures for children, confounding factors include developmental considerations for language-based items included in all DOC measures. Given the lack of pediatric DOC measures, there is a pressing need for measures that are sensitive to the complex clinical presentations typical of DOC and that can accommodate the developmental levels of pediatric populations. The music therapy assessment tool for awareness in disorders of consciousness (MATADOC) is a music-based measure that has been standardized for adults with DOC. Given its emphasis on non-language based sensory stimuli, it is well-suited to pediatric populations spanning developmental stages. In a pre-pilot exploratory study, we examined the clinical utility of this measure and explored trends for test-retest and inter-rater agreement as well as its performance against external reference standards. In several cases, MATADOC items in the visual and auditory domains produced outcomes suggestive of higher level functioning when compared to outcomes provided by other DOC measures. Preliminary findings suggest that the MATADOC provides a useful protocol and measure for behavioral assessment and clinical treatment planning with pediatric DOC. Further research with a larger sample is warranted to test a version of the MATADOC that is refined to meet developmental needs of pediatric DOC populations. (shrink)

Detecting conscious awareness in a patient emerging from a coma state is problematic, because our standard attributions of conscious awareness rely on interpreting bodily movement as intentional action. Where there is an absence of intentional bodily action, as in the vegetative state, can we reliably assume that there is an absence of conscious awareness? Recent neuroimaging work suggests that we can attribute conscious awareness to some patients in a vegetative state by interpreting their brain activity as intentional mental action. I (...) suggest that this change of focus, from the interpretation of motor behaviour as intentional bodily action to the interpretation of neural activity as intentional mental action, raises philosophical issues that affect the interpretation of the neuroimaging data. (shrink)

The concept of futility is sometimes regarded as a cloak for medical paternalism in that it rolls together medical and value judgments. Often, despite attempts to disambiguate the concept, that is true and it can be applied in such a way as to marginalize the real interests of a patient. I suggest we replace it with a conceptual toolkit that includes physiological futility, substantial benefit (SB), and the risk of unacceptable badness (RUB) in that these concepts allow us to articulate (...) what is at stake in ethical judgments where outcomes are crucial in determining what should be done. (shrink)

In this paper, we review recent neuroimaging investigations of disorders of consciousness and different disciplines' understanding of consciousness itself. We consider potential tests of consciousness, their legal significance, and how they map onto broader themes in U.S. statutory law pertaining to advance directives and surrogate decision-making. In the process, we outline a taxonomy of themes to illustrate and clarify the variance in state-law definitions of consciousness. Finally, we discuss broader scientific, ethical, and legal issues associated with the advent of neuroimaging (...) for disorders of consciousness and conclude with policy recommendations that could help to mitigate confusion in this realm. (shrink)