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What is a multisensory cortex? A laminar, connectional, and functional study of a ferret temporal cortical multisensory area.
Meredith, M Alex; Keniston, Leslie P; Prickett, Elizabeth H; Bajwa, Moazzum; Cojanu, Alexandru; Clemo, H Ruth; Allman, Brian L.
Affiliation
  • Meredith MA; Department of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, Richmond, Virginia.
  • Keniston LP; Department of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, Richmond, Virginia.
  • Prickett EH; Department of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, Richmond, Virginia.
  • Bajwa M; Department of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, Richmond, Virginia.
  • Cojanu A; Department of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, Richmond, Virginia.
  • Clemo HR; Department of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, Richmond, Virginia.
  • Allman BL; Department of Anatomy and Neurobiology, Virginia Commonwealth University School of Medicine, Richmond, Virginia.
J Comp Neurol ; 528(11): 1864-1882, 2020 07 15.
Article in En | MEDLINE | ID: mdl-31955427
Now that examples of multisensory neurons have been observed across the neocortex, this has led to some confusion about the features that actually designate a region as "multisensory." While the documentation of multisensory effects within many different cortical areas is clear, often little information is available about their proportions or net functional effects. To assess the compositional and functional features that contribute to the multisensory nature of a region, the present investigation used multichannel neuronal recording and tract tracing methods to examine the ferret temporal region: the lateral rostral suprasylvian sulcal area. Here, auditory-tactile multisensory neurons were predominant and constituted the majority of neurons across all cortical layers whose responses dominated the net spiking activity of the area. These results were then compared with a literature review of cortical multisensory data and were found to closely resemble multisensory features of other, higher-order sensory areas. Collectively, these observations argue that multisensory processing presents itself in hierarchical and area-specific ways, from regions that exhibit few multisensory features to those whose composition and processes are dominated by multisensory activity. It seems logical that the former exhibit some multisensory features (among many others), while the latter are legitimately designated as "multisensory."
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Cerebral Cortex / Neurons Limits: Animals Language: En Journal: J Comp Neurol Year: 2020 Document type: Article Country of publication: United States

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Cerebral Cortex / Neurons Limits: Animals Language: En Journal: J Comp Neurol Year: 2020 Document type: Article Country of publication: United States