The macaque ventral intraparietal functional connectivity patterns reveal an anterio-posterior specialization mirroring that described in human ventral intraparietal area
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View abstract on PubMed
Summary
This summary is machine-generated.Macaque ventral intraparietal area (VIP) shows functional specialization along its anterior-posterior axis. Anterior VIP connects to motor and tactile regions, while posterior VIP links to motion and eye movement areas.
Area Of Science
- Neuroscience
- Primate Brain Research
- Functional Connectivity
Background
- The ventral intraparietal area (VIP) in macaques processes multisensory information and is crucial for cognitive functions like peripersonal space awareness.
- While human VIP shows regional specialization, macaque VIP's anatomical divisions lack clear functional correlates.
- Existing functional MRI data suggest an anterior-posterior functional gradient in macaque VIP.
Purpose Of The Study
- To investigate functional specialization within macaque VIP by examining its whole-brain resting-state functional connectivity.
- To compare functional connectivity profiles with anatomical tracing and task-based fMRI findings.
- To determine if anterior and posterior regions of macaque VIP exhibit distinct functional specializations.
Main Methods
- Divided macaque VIP into three anterior-posterior regions of interest (ROIs).
- Assessed ipsilateral, whole-brain functional connectivity during awake resting state.
- Compared resting-state functional connectivity profiles with existing anatomical and task-based fMRI data.
Main Results
- Functional connectivity profiles closely mirrored anatomical connectivity patterns.
- Anterior VIP showed strong connections to motor, tactile, and proprioceptive areas involved in reaching and grasping.
- Posterior VIP exhibited maximal functional connectivity with regions associated with motion processing and eye movements.
Conclusions
- Resting-state functional connectivity supports distinct functional specializations in anterior and posterior macaque VIP.
- These findings align with human VIP regional specializations and suggest conserved functional organization.
- The study provides evidence for functional differentiation within macaque VIP, complementing anatomical and task-based studies.
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