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Neuroethics

Mind-controlled limbs and redefining the self

Image credit: University of Pittsburgh/UPMC

This week there were reports of the amazing advances being made in brain-computer interface (BCI) technology. Following just weeks of training, a 52-year old woman, paralysed from the neck down, was able to use her mind to control a robotic hand to pick up objects on a table, including cones, blocks and small balls, and put them down at another location. She was even able to use the hand to feed herself chocolate.

Having had two arrays of microelectrodes surgically implanted into her left motor cortex, Jan is wired up to a computer that has been programmed to interpret the signals her neurons emit. This computer then passes on the interpreted signals to the robotic arm, which moves in accordance with the signals in real time.

Aside from the awesomeness of the technology, the use of neuroprostheses such as this raises a whole host of interesting philosophical and ethical questions. Particularly as the technology gets more sophisticated and more integrated, the distinction between the machinery being used and the person using it will become increasingly blurred. In the video, Jan already describes how she went from having to ‘think’ the commands (‘clockwise, up, down, forward, back…’) to merely having to ‘look at the target’ to effect accurate movement of the arm. This phenomenon is sometimes labeled ‘transparency of use’, where a tool serves a person’s goals without itself being an object of effortful control.Read More »Mind-controlled limbs and redefining the self

Psychopaths should not be punished

Lincoln Frias – member of the International Neuroethics Society, Post-Doctoral Fellow at the Federal University of Minas Gerais (CAPES, NEPC-UFMG), Brazil. 

Please focus: now, imagine a cute little child with her curious big eyes, her surprising funny remarks, and out of blue kindness. But now imagine her being kicked in the head to death, blood all over the place, despite her helplessness and her painful screams. If you really imagined this scenario, you probably experienced a revulsive feeling in your guts, tension in the jaw and maybe even a bitter taste in your mouth. Now, change the perspective: now it is you who is kicking her, causing her teeth to break, and all the blood coming out of her little body while she cries with a squeaky voice. This new vision probably brought even more aversive feelings, something similar to disgust, and it is possible that you are frowning right now, maybe even considering stop reading. To make things worse, imagine that your mother saw you doing that. This elicits a powerful feeling composed by anxiety, horror and intrusive thoughts of guilt and inadequacy, leaving you in a submissive state of mind.Read More »Psychopaths should not be punished

Treating ADHD may reduce criminality

Pharmaceutical treatment of attention deficit-hyperactivity disorder (ADHD) is associated with reduced criminality according to a study published yesterday in the New England Journal of Medicine. The study of over 25,000 Swedish adults with the disorder found that men undergoing pharmaceutical treatments had a 51% chance of committing at least one crime in a 4-year period compared to 63% for those not in treatment. The risk of criminality for women with ADHD was 25% for those taking medication, and 31% for those not in treatment. It’s possible, of course, that the reduction in criminality associated with treatment was due not to the treatment itself, but to other factors, such as desire to improve behaviour, which could have both motivated treatment and reduced criminality. However, even when the investigators adjusted for likely confounders, they found that treatment was associated with significantly reduced criminal offending. Thus, their findings are at least suggestive of a causal relationship between medication and reduced crime.

It will be interesting to see how such a relationship, if it can be further supported, will be viewed by the general public and medical profession. Will it be seen as strengthening or weakening the case for ADHD treatment?

Read More »Treating ADHD may reduce criminality

A Dyslexic boy in a Trojan horse

‘Come in’, said the Well Known Educational Psychologist. We did. ‘Please sit down’, she said, and we did. She didn’t waste time, and quite right too. We wanted to know.

‘Tom and I have had a very interesting afternoon.’ That sounded bad.

‘He’s a very able child indeed’. That sounded worse, because it came with the emphatic pause that always indicates a big ‘but’.

In the pause I wondered why we’d done this. Why we’d taken a little boy out of the woods and out of his playground to have someone fumble inside his head with blunt tools: indices, probes, inventories, and assumptions about normality.

‘He’s quite dramatically dyslexic, I’m afraid.’ My wife shared her fear. There was a lot of it sloshing around. ‘But his IQ is so high that he’ll be able to use lots of coping strategies. And he’s still very young: there’s lots that can be done.’ And she told us what it was. Regulations could be invoked, tribunals could be convened, cards could be flashed, phonemes could be chanted. He could be imprinted like other children. It would just take longer. It would be hard work, for Tom and for us, but there was every reason to be hopeful of a ‘good result’.

And what the hell did that mean? I asked myself. I was too polite to ask her. I didn’t want a result. I wanted my son.Read More »A Dyslexic boy in a Trojan horse

The ethics of a chemical break-up

 UPDATE: AUDIO NOW AVAILABLE HERE.

Forthcoming talk: If I could just stop loving you: Anti-love biotechnology and the ethics of a chemical break-up

Date & Time: 30th Nov 2012 4:00pm-5:30pm
Description:

Abstract:  “Love hurts” – as the saying goes – and a certain degree of pain and difficulty in intimate relationships is unavoidable. Sometimes it may even be beneficial, since, as it is often argued, some types (and amounts) of suffering can lead to personal growth, self-discovery, and a range of other essential components of a life well-lived. But other times, love is downright dangerous. Either it can trap a person in a cycle of violence, as in some domestic abuse cases, or it can prevent a person from moving on with her life or forming healthier relationships. There other cases of problematic love as well:

Read More »The ethics of a chemical break-up

Could there be a Third Way for Criminal Psychopaths?

Last week, Steven Farrow was convicted of murdering a grandmother and a vicar. 77 year old Betty Yates was stabbed in the face. He had planned to crucify the vicar but had left behind his hammer an nails, instead covering his dead body in pornographic DVDs, party poppers and condoms. Though Farrow is likely to spend the rest of his life in jail, the family members questioned why he had been free in the first place.

Read More »Could there be a Third Way for Criminal Psychopaths?

Should you be prosecuted for feeding junk food to your child?

 By Charles Foster

Fast food permanently reduces children’s IQ, a recent and unsurprising study reports.

What should be done? The answer is ethically and legally simple. Parents who feed their children junk food, knowing of the attendant risks, are child-abusers, and should be prosecuted. If you hit a child, bruising it, you are guilty of a criminal offence. A bruise on a child’s leg is of far less lasting significance than the brain damage produced by requiring a child to ingest toxic junk. A child injured by a negligent or malicious parent can also bring civil proceedings against the parent.

The findings of the recent study mirror those in other jurisdictions. And now that they have been widely disseminated it will be hard for parents to plead ignorance.Read More »Should you be prosecuted for feeding junk food to your child?

A Lack of Olympic Spirit

This morning, the men’s Olympic under 80 kg Taekwondo competition takes place. However, the British competitor widely regarded as the world’s best fighter in that category will not be taking part. Instead, a competitor ranked 59th in the world will be fighting in his place. Neither the British Taekwondo Association, nor the British Olympic association, nor the World Taekwondo Federation come out of the affair looking good. In particular, the latter two bodies seem to have shown either a basic ignorance of human nature, or a wilful refusal to resolve a gross injustice.

Read More »A Lack of Olympic Spirit

On being yourself

‘I was always the life and soul of the party, flirting with everyone’, wrote Lucille Howe, in ‘Fabulous Magazine’, (22 July 2012), ‘but I wanted John to fall in love with the real, quieter me’. In the same article, Charlotte Ruhle notes how her psychotherapy helped her to recover from a broken relationship. ‘[My] friends started saying I….seemed more like my old self.‘
The media, and indeed our ordinary conversations, are awash with this sort of language. Not only are we conscious – having a sense that there is an ‘I’ that is in some sort of continuity with the ‘I’ that existed yesterday, will hopefully exist tomorrow, and to whom things happen – but we have firm convictions about the nature of the ‘I’. When it is not allowed to express itself – to ‘be itself’, we complain. Depending on our education, we say that we’re ‘out of sorts’, ‘not myself’, or ‘ontologically vertiginous’.Read More »On being yourself

Parkinson’s medication blamed for sexual offences

Adrian Carter and Wayne Hall, from the Neuroethics group at the University of Queensland Centre for Clinical Research, Australia

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The medication that provides significant relief from debilitating motor disturbances in people with Parkinson’s disease appears to cause a range of psychiatric disturbances that are as distressing and difficult to treat as the motor symptoms they aim to relieve.

Parkinson’s disease is usually treated with dopamine replacement therapy (DRT). This involves daily dosing with either levodopa (a precursor to the neurotransmitter, dopamine) or dopamine agonists (such as pramipexole and ropinirole) that mimic the effects of dopamine in the brain. The aim of DRT is to reduce the effects of the loss of dopaminergic neurons in specific regions of the brain involved in controlling bodily movement. However, dopamine is also a key neurotransmitter in a range of cognitive processes from executive control and memory to motivation and bonding. It is perhaps unsurprising that many Parkinson’s patients experience adverse psychiatric and cognitive side-effects from taking large doses of dopamine every day. 

Parkinson’s patients can experience severe anxiety, depression and mania and have a higher risk of suicide. A significant minority of Parkinson’s patients treated with dopamine replacement therapy will also develop impulsive and compulsive behaviours that appear to be caused by their medication. These include pathological gambling and hypersexuality, and compulsive eating and shopping. In rare cases, patients have committed criminal offences. Read More »Parkinson’s medication blamed for sexual offences