@article {5512, title = {A ubiquitous spectrolaminar motif of local field potential power across the primate cortexAbstract}, journal = {Nature Neuroscience}, volume = {27}, year = {2024}, month = {01/2024}, pages = {547 - 560}, abstract = {

The mammalian cerebral cortex is anatomically organized into a six-layer
motif. It is currently unknown whether a corresponding laminar motif of
neuronal activity patterns exists across the cortex. Here we report such a
motif in the power of local field potentials (LFPs). Using laminar probes,
we recorded LFPs from 14 cortical areas across the cortical hierarchy in five
macaque monkeys. The laminar locations of recordings were histologically
identified by electrolytic lesions. Across all areas, we found a ubiquitous
spectrolaminar pattern characterized by an increasing deep-to-superficial
layer gradient of high-frequency power peaking in layers 2/3 and an
increasing superficial-to-deep gradient of alpha-beta power peaking in
layers 5/6. Laminar recordings from additional species showed that the
spectrolaminar pattern is highly preserved among primates{\textemdash}macaque,
marmoset and human{\textemdash}but more dissimilar in mouse. Our results suggest
the existence of a canonical layer-based and frequency-based mechanism
for cortical computation.

}, issn = {1097-6256}, doi = {10.1038/s41593-023-01554-7}, url = {https://www.nature.com/articles/s41593-023-01554-7}, author = {Diego Mendoza-Halliday and Major, Alex James and Lee, Noah and Lichtenfeld, Maxwell J. and Carlson, Brock and Mitchell, Blake and Meng, Patrick D. and Xiong, Yihan and Westerberg, Jacob A. and Jia, Xiaoxuan and Johnston, Kevin D. and Selvanayagam, Janahan and Everling, Stefan and Maier, Alexander and Desimone, Robert and Miller, Earl K. and Bastos, Andr{\'e} M.} } @article {4805, title = {Face selective patches in marmoset frontal cortexAbstract}, journal = {Nature Communications}, volume = {11}, year = {2020}, month = {12/2020}, abstract = {

In humans and macaque monkeys, socially relevant face processing is accomplished via a distributed functional network that includes specialized patches in frontal cortex. It is unclear whether a similar network exists in New World primates, who diverged ~35 million years from Old World primates. The common marmoset is a New World primate species ideally placed to address this question given their complex social repertoire. Here, we demonstrate the existence of a putative high-level face processing network in marmosets. Like Old World primates, marmosets show differential activation in anterior cingulate and lateral prefrontal cortices while they view socially relevant videos of marmoset faces. We corroborate the locations of these frontal regions by demonstrating functional and structural connectivity between these regions and temporal lobe face patches. Given the evolutionary separation between macaques and marmosets, our results suggest this frontal network specialized for social face processing predates the separation between Platyrrhini and Catarrhini.

}, doi = {10.1038/s41467-020-18692-2}, url = {http://www.nature.com/articles/s41467-020-18692-2}, author = {Schaeffer, David J. and Selvanayagam, Janahan and Johnston, Kevin D. and Menon, Ravi S. and W. A. Freiwald and Everling, Stefan} } @article {1726, title = {Face Patch Resting State Networks Link Face Processing to Social Cognition.}, journal = {PLoS Biology}, volume = {13}, year = {2015}, month = {09/2015}, pages = {e1002245}, abstract = {

Faces transmit a wealth of social information. How this information is exchanged between face-processing centers and brain areas supporting social cognition remains largely unclear. Here we identify these routes using resting state functional magnetic resonance imaging in macaque monkeys. We find that face areas functionally connect to specific regions within frontal, temporal, and parietal cortices, as well as subcortical structures supporting emotive, mnemonic, and cognitive functions. This establishes the existence of an extended face-recognition system in the macaque. Furthermore, the face patch resting state networks and the default mode network in monkeys show a pattern of overlap akin to that between the social brain and the default mode network in humans: this overlap specifically includes the posterior superior temporal sulcus, medial parietal, and dorsomedial prefrontal cortex, areas supporting high-level social cognition in humans. Together, these results reveal the embedding of face areas into larger brain networks and suggest that the resting state networks of the face patch system offer a new, easily accessible venue into the functional organization of the social brain and into the evolution of possibly uniquely human social skills.

}, keywords = {Face recognition, neural nerworks, prefrontal cortex, social cognition}, issn = {1545-7885}, doi = {10.1371/journal.pbio.1002245}, url = {http://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.1002245}, author = {Schwiedrzik, Caspar M and Wilbert Zarco and Everling, Stefan and W. A. Freiwald} }