Journal
CEREBRAL CORTEX
Volume -, Issue -, Pages -Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/cercor/bhad168
Keywords
predictive processing; descending connections; sensorimotor integration; episodic memory; mental imagery
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This study investigates the neural origin and generation process of top-down induced prediction from motor and memory systems to sensory cortices. Using fMRI and a dual imagery paradigm, the researchers found that motor and memory upstream systems activate the auditory cortex in a content-specific manner. Additionally, the inferior and posterior parts of the parietal lobe relay predictive signals differently in motor-to-sensory and memory-to-sensory networks. Dynamic causal modeling of directed connectivity reveals the distinctive neurocognitive basis of predictive processing.
Predictions are constantly generated from diverse sources to optimize cognitive functions in the ever-changing environment. However, the neural origin and generation process of top-down induced prediction remain elusive. We hypothesized that motor-based and memory-based predictions are mediated by distinct descending networks from motor and memory systems to the sensory cortices. Using functional magnetic resonance imaging (fMRI) and a dual imagery paradigm, we found that motor and memory upstream systems activated the auditory cortex in a content-specific manner. Moreover, the inferior and posterior parts of the parietal lobe differentially relayed predictive signals in motor-to-sensory and memory-to-sensory networks. Dynamic causal modeling of directed connectivity revealed selective enabling and modulation of connections that mediate top-down sensory prediction and ground the distinctive neurocognitive basis of predictive processing.
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