There’s no shortage of apps and technology that claim to shift the brain into a “theta” state – said to help with relaxation, inward focus and sleep.

But what exactly does it mean to change one’s “mental state”? And is that even possible? For now, the evidence remains murky. But our understanding of the brain is growing exponentially as our methods of investigation improve.

Brain-measuring tech is evolving

Currently, no single approach to imaging or measuring brain activity gives us the whole picture. What we “see” in the brain depends on which tool we use to “look”. There are myriad ways to do this, but each one comes with trade-offs.

We learnt a lot about brain activity in the 1980s thanks to the advent of magnetic resonance imaging (MRI).

Eventually we invented “functional MRI”, which allows us to link brain activity with certain functions or behaviours in real time by measuring the brain’s use of oxygenated blood during a task.

We can also measure electrical activity using EEG (electroencephalography). This can accurately measure the timing of brain waves as they occur, but isn’t very accurate at identifying which specific areas of the brain they occur in.

Alternatively, we can measure the brain’s response to magnetic stimulation. This is very accurate in terms of area and timing, but only as long as it’s close to the surface.

What are brain states?

All of our simple and complex behaviours, as well as our cognition (thoughts) have a foundation in brain activity, or “neural activity”. Neurons – the brain’s nerve cells – communicate by a sequence of electrical impulses and chemical signals called “neurotransmitters”.

Neurons are very greedy for fuel from the blood and require a lot of support from companion cells. Hence, a lot of measurement of the site, amount and timing of brain activity is done via measuring electrical activity, neurotransmitter levels or blood flow.

We can consider this activity at three levels. The first is a single-cell level, wherein individual neurons communicate. But measurement at this level is difficult (laboratory-based) and provides a limited picture.

As such, we rely more on measurements done on a network level, where a series of neurons or networks are activated. Or, we measure whole-of-brain activity patterns which can incorporate one or more so-called “brain states”.

According to a recent definition, brain states are “recurring activity patterns distributed across the brain that emerge from physiological or cognitive processes”. These states are functionally relevant, which means they are related to behaviour.

Brain states involve the synchronisation of different brain regions, something that’s been most readily observed in animal models, usually rodents. Only now are we starting to see some evidence in human studies.

Various kinds of states

The most commonly-studied brain states in both rodents and humans are states of “arousal” and “resting”. You can picture these as various levels of alertness.

Studies show environmental factors and activity influence our brain states. Activities or environments with high cognitive demands drive “attentional” brain states (so-called task-induced brain states) with increased connectivity. Examples of task-induced brain states include complex behaviours such as reward anticipation, mood, hunger and so on.

In contrast, a brain state such as “mind-wandering” seems to be divorced from one’s environment and tasks. Dropping into daydreaming is, by definition, without connection to the real world.

We can’t currently disentangle multiple “states” that exist in the brain at any given time and place. As mentioned earlier, this is because of the trade-offs that come with recording spatial (brain region) versus temporal (timing) brain activity.

Brain states vs brain waves

Brain state work can be couched in terms such as alpha, delta and so forth. However, this is actually referring to brain waves which specifically come from measuring brain activity using EEG.

EEG picks up on changing electrical activity in the brain, which can be sorted into different frequencies (based on wavelength). Classically, these frequencies have had specific associations:

• gamma is linked with states or tasks that require more focused concentration
• beta is linked with higher anxiety and more active states, with attention often directed externally
• alpha is linked with being very relaxed, and passive attention (such as listening quietly but not engaging)
• theta is linked with deep relaxation and inward focus
• and delta is linked with deep sleep.

Brain wave patterns are used a lot to monitor sleep stages. When we fall asleep we go from drowsy, light attention that’s easily roused (alpha), to being relaxed and no longer alert (theta), to being deeply asleep (delta).

Can we control our brain states?

The question on many people’s minds is: can we judiciously and intentionally influence our brain states?

For now, it’s likely too simplistic to suggest we can do this, as the actual mechanisms that influence brain states remain hard to detangle. Nonetheless, researchers are investigating everything from the use of drugs, to environmental cues, to practising mindfulness, meditation and sensory manipulation.

Controversially, brain wave patterns are used in something called “neurofeedback” therapy. In these treatments, people are given feedback (such as visual or auditory) based on their brain wave activity and are then tasked with trying to maintain or change it. To stay in a required state they may be encouraged to control their thoughts, relax, or breathe in certain ways.

The applications of this work are predominantly around mental health, including for individuals who have experienced trauma, or who have difficulty self-regulating – which may manifest as poor attention or emotional turbulence.

However, although these techniques have intuitive appeal, they don’t account for the issue of multiple brain states being present at any given time. Overall, clinical studies have been largely inconclusive, and proponents of neurofeedback therapy remain frustrated by a lack of orthodox support.

Other forms of neurofeedback are delivered by MRI-generated data. Participants engaging in mental tasks are given signals based on their neural activity, which they use to try and “up-regulate” (activate) regions of the brain involved in positive emotions. This could, for instance, be useful for helping people with depression.

Another potential method claimed to purportedly change brain states involves different sensory inputs. Binaural beats are perhaps the most popular example, wherein two different wavelengths of sound are played in each ear. But the evidence for such techniques is similarly mixed.

Treatments such as neurofeedback therapy are often very costly, and their success likely relies as much on the therapeutic relationship than the actual therapy.

On the bright side, there’s no evidence these treatment do any harm – other than potentially delaying treatments which have been proven to be beneficial.

Susan Hillier, Professor: Neuroscience and Rehabilitation, University of South Australia

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Creating art for healing purposes dates back tens of thousands of years, to the practices of First Nations people around the world. Art therapy uses creative processes, primarily visual art such as painting, drawing or sculpture, with a view to improving physical health and emotional wellbeing.

When people face significant physical or mental ill-health, it can be challenging to put their experiences into words. Art therapists support people to explore and process overwhelming thoughts, feelings and experiences through a reflective art-making process. This is distinct from art classes, which often focus on technical aspects of the artwork, or the aesthetics of the final product.

Art therapy can be used to support treatment for a wide range of physical and mental health conditions. It has been linked to benefits including improved self-awareness, social connection and emotional regulation, while lowering levels of distress, anxiety and even pain scores.

In a study published this week in the Journal of Mental Health, we found art therapy was associated with positive outcomes for children and adolescents in a hospital-based mental health unit.

An option for those who can’t find the words

While a person’s engagement in talk therapies may sometimes be affected by the nature of their illness, verbal reflection is optional in art therapy.

Where possible, after finishing an artwork, a person can explore the meaning of their work with the art therapist, translating unspoken symbolic material into verbal reflection.

However, as the talking component is less central to the therapeutic process, art therapy is an accessible option for people who may not be able to find the words to describe their experiences.

Art therapy has supported improved mental health outcomes for people who have experienced trauma, people with eating disorders, schizophrenia and dementia, as well as children with autism.

Art therapy has also been linked to improved outcomes for people with a range of physical health conditions. These include lower levels of anxiety, depression and fatigue among people with cancer, enhanced psychological stability for patients with heart disease, and improved social connection among people who have experienced a traumatic brain injury.

Art therapy has been associated with improved mood and anxiety levels for patients in hospital, and lower pain, tiredness and depression among palliative care patients.

Our research

Mental ill-health, including among children and young people, presents a major challenge for our society. While most care takes place in the community, a small proportion of young people require care in hospital to ensure their safety.

In this environment, practices that place even greater restriction, such as seclusion or physical restraint, may be used briefly as a last resort to ensure immediate physical safety. However, these “restrictive practices” are associated with negative effects such as post-traumatic stress for patients and health professionals.

Worryingly, staff report a lack of alternatives to keep patients safe. However, the elimination of restrictive practices is a major aim of mental health services in Australia and internationally.

Our research looked at more than six years of data from a child and adolescent mental health hospital ward in Australia. We sought to determine whether there was a reduction in restrictive practices during the periods when art therapy was offered on the unit, compared to times when it was absent.

We found a clear association between the provision of art therapy and reduced frequency of seclusion, physical restraint and injection of sedatives on the unit.

We don’t know the precise reason for this. However, art therapy may have lessened levels of severe distress among patients, thereby reducing the risk they would harm themselves or others, and the likelihood of staff using restrictive practices to prevent this.

That said, hospital admission involves multiple therapeutic interventions including talk-based therapies and medications. Confirming the effect of a therapeutic intervention requires controlled clinical trials where people are randomly assigned one treatment or another.

Although ours was an observational study, randomised controlled trials support the benefits of art therapy in youth mental health services. For instance, a 2011 hospital-based study showed reduced symptoms of post-traumatic stress disorder among adolescents randomised to trauma-focussed art therapy compared to a “control” arts and crafts group.

What do young people think?

In previous research we found art therapy was considered by adolescents in hospital-based mental health care to be the most helpful group therapy intervention compared to other talk-based therapy groups and creative activities.

In research not yet published, we’re speaking with young people to better understand their experiences of art therapy, and why it might reduce distress. One young person accessing art therapy in an acute mental health service shared:

[Art therapy] is a way of sort of letting out your emotions in a way that doesn’t involve being judged […] It let me release a lot of stuff that was bottling up and stuff that I couldn’t explain through words.

A promising area

The burgeoning research showing the benefits of art therapy for both physical and especially mental health highlights the value of creative and innovative approaches to treatment in health care.

There are opportunities to expand art therapy services in a range of health-care settings. Doing so would enable greater access to art therapy for people with a variety of physical and mental health conditions.

Sarah Versitano, Academic, Master of Art Therapy Program, Western Sydney University and Iain Perkes, Senior Lecturer, Child and Adolescent Psychiatry, UNSW Sydney

This article is republished from The Conversation under a Creative Commons license. Read the original article.