title: [Neuronal connections within the hand representation in areas 3b and 1 of the somatosensory cortex in primates].
abstract: BACKGROUND
  The close functional relationship between areas 3b and 1 of the somatosensory cortex is based on their reciprocal connections indicating that tactile sensation depends on the interaction of these two areas.
  
  
  OBJECTIVE
  The aim of the authors was to explore this neuronal circuit at the level of the distal finger pad representation.
  
  
  METHODS
  The study was made by bidirectional tract tracing aided by neurophysiological mapping in squirrel monkeys (Saimiri sciureus).
  
  
  RESULTS
  Inter-areal connections between the two areas preferred the homologues representations. However, intra-areal connections were formed between the neighboring finger pad representations supporting the physiological observations. Interestingly, the size of the local input area of the injected cortical micro-region, which differed in the two areas, represented the same skin area.
  
  
  CONCLUSIONS
  The authors propose that intra-areal connections are important in integrating information across fingers, while inter-areal connections are important in maintaining input localization during hand movement. Orv. Hetil., 2016, 157(33), 1320-1325.
authors: Anatómiai, Szövet- és Fejlődéstani Intézet, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest, Tűzoltó u. 58., 1094.
authors: Emese
authors: E
authors: Pálfi
authors: Élettani és Biokémiai Tanszék, Szent István Egyetem, Állatorvos-tudományi Kar Budapest.
authors: Mária
authors: M
authors: Ashaber
authors: Department of Mathematical Sciences, University of Montana Missoula, MT, Amerikai Egyesült Államok.
authors: Cory
authors: C
authors: Palmer
authors: Division of Neuroscience, Oregon Health and Science University Portland, OR, Amerikai Egyesült Államok.
authors: Robert M
authors: RM
authors: Friedman
authors: Division of Neuroscience, Oregon Health and Science University Portland, OR, Amerikai Egyesült Államok.|Zhejiang University Interdisciplinary Institute of Neuroscience and Technology, Zhejiang University Hangzhou, Kína.
authors: Anna W
authors: AW
authors: Roe
authors: Anatómiai, Szövet- és Fejlődéstani Intézet, Semmelweis Egyetem, Általános Orvostudományi Kar Budapest, Tűzoltó u. 58., 1094.|Elméleti Idegtudomány és Komplex Rendszerek Csoport, Magyar Tudományos Akadémia, Wigner Fizikai Kutatóközpont Budapest.
authors: László
authors: L
authors: Négyessy
mesh_terms: D000818:Animals; D001931:Brain Mapping; D005385:Fingers; D006225:Hand; D006801:Humans; D009473:Neuronal Plasticity; D009474:Neurons / Q000502:physiology*; D012453:Saimiri; D013003:Somatosensory Cortex / Q000502:physiology*; D014110:Touch
keywords: electrophysiology; elektrofiziológia; horizontal connections; horizontális kapcsolatok; intrinsic signal optical imaging; pályajelölés; tapintás; touch; tract tracing