Abstract
Adaptive brain function requires that sensory impressions of the social and natural milieu are dynamically incorporated into intrinsic brain activity. While dynamic switches between brain states have been well characterised in resting state acquisitions, the remodelling of these state transitions by engagement in naturalistic stimuli remains poorly understood. Here, we show that the temporal dynamics of brain states, as measured in fMRI, are reshaped from predominantly bistable transitions between two relatively indistinct states at rest, toward a sequence of well-defined functional states during movie viewing whose transitions are temporally aligned to specific features of the movie. The expression of these brain states covaries with different physiological states and reflects subjectively rated engagement in the movie. In sum, a data-driven decoding of brain states reveals the distinct reshaping of functional network expression and reliable state transitions that accompany the switch from resting state to perceptual immersion in an ecologically valid sensory experience.
Highlights
Adaptive brain function requires that sensory impressions of the social and natural milieu are dynamically incorporated into intrinsic brain activity
Functional magnetic resonance imaging data were analyzed for 18 healthy participants who were scanned during 8 min of resting-state followed by 20 min of movie viewing
We assessed if the temporal dynamics of distinct brain states reflect the sensory, cognitive, emotional, and physiological processes underpinning the subjective experience of a theatrical movie
Summary
Adaptive brain function requires that sensory impressions of the social and natural milieu are dynamically incorporated into intrinsic brain activity. We show that the temporal dynamics of brain states, as measured in fMRI, are reshaped from predominantly bistable transitions between two relatively indistinct states at rest, toward a sequence of well-defined functional states during movie viewing whose transitions are temporally aligned to specific features of the movie. Common methods adopted to infer macroscopic dynamics, including dynamic functional connectivity, are prone to non-neural confounds such as head motion, cardiac noise, and respiratory artefacts[13] It remains unclear how brain functions rely on major dynamic reconfigurations of whole-brain functional patterns[14,15]. Conventional task designs, which typically comprise discretely presented, abstract stimuli impede the assessment of associations between ongoing stimulus processing and its evaluation such as the engagement and interest in the narrative of a story or a movie[16]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
