A central interest in neuroscience is understanding how the brain produces and orchestrates behavior. Our group studies these topics in rats, utilizing recent advances in tracking technology and analytic tools to quantify and explore behavior in naturalistic, unrestrained contexts. Previous publications from the group describe robust postural and behavioral representations in the posterior parietal cortex (PPC), frontal motor cortex and primary sensory cortices (Mimica et al., 2018, Mimica, Tombaz et al., 2023). To better understand how neuronal populations integrate active sensory input to inform and update ongoing posture, we are now expanding our recording paradigm to include tracking of facial features – namely whiskers and eye movements. We therefore developed a custom head-mounted set-up combining two facial-tracking cameras, housing for Neuropixels recording probes (allowing for insertion at relevant angles), and a retroreflective rigid body for 3D posture tracking. We are currently employing this integrated approach to investigate sensory-motor integration in two cortical areas. Firstly the barrel cortex, i.e. the region of primary somatosensory cortex (S1) associated with whiskers, where our preliminary analyses confirm stable encoding of whisker position. Our second area of interest remains the PPC where we hope to extend existing work on behavioral representation in the region by investigating the combined representation of multiple body schema effectors (e.g. the head, vibrissae, and eyes) during spontaneous behavior.