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Can a work of art reveal the presence of a neurodegenerative disease?

admin by admin
November 29, 2022
in News


Physics of Life Reviews (2022). DOI: 10.1016/j.plrev.2022.07.005″ width=”724″ height=”530″/>
Summary of main types of neurodegenerative disorders related to art-making, and main arguments for damage and impact on artistic signature from previous case studies. (Note, highlighted areas do not necessarily show all brain regions connected to the various disorders, especially over full disorder time course, but rather indicate main areas especially connected to art-making case literature. Blue = areas of proposed damage/diminished function; Pink = increased activation/functionality. ? = artistic changes with conflicting reports in case literature.). Credit: Physics of Life Reviews (2022). DOI: 10.1016/j.plrev.2022.07.005

For decades, scientists have been interested in the effects of neurodegenerative disorders on the way people approach and produce visual art. They have sought the “artistic signatures” of diseases of the nervous system in the hope that art can offer a window onto changes in the brain.

However, the literature on the subject mainly reports scattered evidence and subjective descriptions of clinical cases, based on the authors’ personal observations.

What if it were possible to objectively and scientifically establish a tangible relationship between brain changes brought on by degenerative diseases and the way people make artistic choices and express their creativity?

An international research team that includes Dr. Alby Richard, a neurologist, researcher at the Centre hospitalier de l’Université de Montréal (CHUM) Research Centre and professor in the Department of Neurosciences at Université de Montréal, is trying to answer that question.

The team has reviewed and assessed previously published clinical case reports on art-making by patients suffering from seven neurological disorders: Alzheimer’s, Parkinson’s, frontotemporal dementia, Lewy body dementia, corticobasal degeneration, aphasia and stroke.

External observers (psychology students and art novices) were then asked to judge the visual artworks recorded in the reports without knowing the artist’s medical condition. The judges were asked to rate the works on a series of criteria: color balance, complexity, abstractness, symbolism, realism, emotional expressiveness, representational accuracy, creativity, technical ability, and so forth.

According to Dr. Richard, “meticulous application of precise criteria revealed patterns in the works consistent with the neurological changes associated with the disorders studied. But these signals are not very strong. It is difficult to draw unequivocal conclusions, art being so subjective.”

One thing that is clear, however: Changes in artistic output can tell us more about the workings of the brain as it creates in art.

A number of circuits invoked

Dr. Richard pointed out that artistic expression invokes a number of neural circuits, including those for memory, emotion, perception, motivation and reward. “These systems must interact in some way to enable humans to produce art,” he said. “If two or three of them stop functioning because of a neurological disorder, the final artistic product will inevitably be different.”

For example, the study found that the neural changes attributable to Alzheimer’s led to less realistic, less balanced and more abstract works. Richard ascribes this pattern to the fact that “many parts of the cerebral cortex are less active in Alzheimer’s patients, making it harder for them to find more nuanced elements when making artistic choices.”

In the case of Parkinson’s disease, the study found a decrease in the creativity and complexity of the artwork, with more saturated and colder colors, and less symbolism.

“Parkinson’s has motor symptoms and patients can take medication to reduce the tremors,” Richard explained. “And we know this medication can stimulate neural circuits useful for creativity in different ways.”

Identifying artistic markers

If health professionals were familiar with the patterns typical of a neurological disorder, could they make a diagnosis just by viewing a piece of art? “It would be great to be able to identify artistic markers of the onset of a neurological disease, but unfortunately I don’t think our knowledge is there yet, partly because there are too many variables,” Dr. Richard replied.

However, he believes the study’s findings could help pinpoint the areas of the brain affected by an already diagnosed disease. The patterns could therefore serve as yardsticks to determine whether a person should start treatment or could qualify for a clinical study.

Dr. Richard added that the data could also be useful for therapeutic purposes: “Art and creative projects could be used to stimulate disease-damaged circuits and perhaps even promote neuroplasticity.”

As a neurologist, he knows the terrible impact of neurodegenerative diseases on patient’s lives all too well—and given the paucity of available treatments, is particularly excited about the prospect of using art as a non-invasive therapy.

The study is published in the journal Physics of Life Reviews.

More information:
Matthew Pelowski et al, Can we really ‘read’ art to see the changing brain? A review and empirical assessment of clinical case reports and published artworks for systematic evidence of quality and style changes linked to damage or neurodegenerative disease, Physics of Life Reviews (2022). DOI: 10.1016/j.plrev.2022.07.005

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University of Montreal


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Can a work of art reveal the presence of a neurodegenerative disease? (2022, November 29)
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