Aesthetics in motion: The beauty of action paintings as revealed by Parkinson’s disease
Visual art offers cognitive neuroscience an opportunity to study how subjective value is constructed from representations supported by multiple neural systems. A surprising finding in research on aesthetic judgment is that functional activation of motor areas of the brain often occurs in response to static, abstract stimuli, such as paintings. This motor activity has variously been hypothesised to reflect the embodied simulation of an artist’s painting movements or emotions, as well as possible preparatory approach-avoidance responses to liked and disliked artworks. However, whether this motor involvement functionally contributes to aesthetic appreciation has not been addressed. Here, we examined whether motor system dysfunction alters the aesthetic experiences of patients with Parkinson’s disease. 43 people with Parkinson’s disease and 40 controls made preference decisions and rated the motion content and their aesthetic appreciation of a set of high-motion action paintings (by Jackson Pollock) and a set of low-motion neoplastic paintings (by Piet Mondrian). People with Parkinson’s disease demonstrated stable and internally consistent preferences for abstract art, but their perception of movement in the paintings was significantly lower in both conditions than that of controls. In addition, people with Parkinson’s demonstrated enhanced preferences for high-motion art, and a fundamentally altered relationship between motion and aesthetic appreciation. Our results do not accord well with a straightforward embodied simulation account of aesthetic experiences, because artworks that did not include visual traces of the artist’s actions were still experienced as lower in motion by Parkinson’s patients. We suggest that the ability to form movement representations from static abstract images is more akin to a process of visual metaphor comprehension that is mediated through the motor system. Overall, we find support for hypotheses linking motion, motor responses and aesthetic appreciation, and provide clear evidence that altered neural functioning changes the way art is perceived and valued.