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Directed Interaction Between Monkey Premotor and Posterior Parietal Cortex During Motor-Goal Retrieval from Working
Pablo Martínez-Vázquez1, Alexander Gail1,2,3
1German Primate Center, Cognitive Neuroscience Lab, Kellnerweg 4, 37077 Göttingen, Germany.
Frontoparietal directed interaction supports cognitive control in goal-directed behavior. Frontal-to-parietal communication is crucial for retrieving spatial working memory (WM) motor goals.
Area of Science:
- Neuroscience
- Cognitive Neuroscience
- Systems Neuroscience
Background:
- Goal-directed behavior relies on cognitive control, involving frontal lobe influence on posterior brain regions.
- Understanding frontoparietal interactions is key to elucidating the neural mechanisms of motor control and working memory.
Purpose of the Study:
- To investigate frontoparietal directed interaction (DI) between the parietal reach region (PRR) and dorsal premotor cortex (PMd) in monkeys.
- To determine if DI supports motor-goal selection or working memory (WM) processes during memory-guided reaches.
Main Methods:
- Computed Granger-causality of intracortical local field potentials (LFPs) between PRR and PMd.
- Analyzed LFP activity in beta (12-32 Hz) and low-frequency (≤10 Hz) bands during a rule-based reach task.
Main Results:
- Beta-band activity from PRR influenced PMd during movement withholding, irrespective of WM content.
- Low-frequency activity from PMd transiently influenced PRR during spatial WM retrieval of motor goals.
- No significant DI was observed during preliminary motor-goal selection.
Conclusions:
- Frontoparietal cortical interactions are essential for cognitive control in goal-directed actions.
- Frontal-to-parietal DI specifically supports the retrieval of motor-goal information from spatial working memory.
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