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Biology subjects

Sacheli, L. M.

Publications and source records attributed to Sacheli, L. M..

2 recordsLinked to original sources

How artists experience their own art

Humanity has always admired and created artwork, but the neurocognitive mechanisms behind artistic experience are still elusive. Professional artists and their intimate relationship with their artworks provide a unique opportunity to study the nature of art experience due to their expertise in both art making and art appreciation. During two fMRI tasks, professional artists (N=20) made aesthetic judgments on their own and other artists paintings (aesthetic appreciation task); they also mentally reconstructed the moments when they conceived their artworks or, as a control condition, when they visited now-familiar places for the first time (reconstruction by imagery task). During art appreciation of their own (as compared to other artists) paintings, participants showed stronger recruitment of bilateral posterior parietal cortices, the left lateral occipitotemporal cortex, and the dorso-central sector of the right insula, that is, action-related brain regions also involved in encoding the emotional components of movements. The reconstruction of their own artistic creation (as compared to episodic memory retrieval) involved the left fronto-parietal network associated with motor cognition. Altogether, these results suggest that the mental representations of the actions involved in creating art are integral to the overall artistic experience of painters, supporting an embodied view of the artists experience of art.

neuroscience↗

Neural mechanisms for visuomotor co-regulation in social synchronization

During social activities, people coordinate their movements by exchanging visuomotor information. Interpersonal coordination occurs from two complementary processes entailing voluntary (planned) and spontaneous (emergent) synchronization, of which neurofunctional underpinnings are unknown. We investigated the brain correlates of these two synchronization processes during an fMRI finger-tapping task. Dyads formed by IN and OUT scanner participants were instructed to reproduce a target tempo and concurrently try to synchronize to (Joint Action, JA) or resist synchronization with (Non-interactive, NI) the partners tapping, whose hand was always visible to the IN participant. Faster, slower, or equal tempi were used to induce within-dyad co-regulation. Results revealed the emergence of tempo contagion: participants tapped faster in response to the partners faster taps and vice versa for slower taps. The magnitude of such an interpersonal contagion effect was similar across conditions but associated with the activity of different neural structures. Tempo contagion correlated positively with lateral occipitotemporal cortex (LOTc) activations in the JA condition but negatively with cerebellar activations in the NI condition. This suggests visuomotor information is exploited in opposite ways depending on the task instructions: the LOTc promotes co-regulation to achieve synchronization in JA, whereas the cerebellum prevents tempo contagion to preserve individual stability in NI. This latter result is supported by a negative functional connectivity between the cerebellum and LOTc. These findings have implications for understating the interplay between planned and emergent synchronization during motor interactions.

neuroscience↗