Somatosensory evoked potentials and blood lactate levels

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• 作者：Valentina Perciavalle ; Giovanna Alagona ; Giulia De Maria…
• 关键词：Maximal exercise ; Blood lactate ; Somatosensory evoked potentials ; Man
• 刊名：Neurological Sciences
• 出版年：2015
• 出版时间：September 2015
• 年：2015
• 卷：36
• 期：9
• 页码：1597-1601
• 全文大小：519 KB
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• 作者单位：Valentina Perciavalle (1)
  Giovanna Alagona (2)
  Giulia De Maria (2)
  Giuseppe Rapisarda (2)
  Erminio Costanzo (2)
  Vincenzo Perciavalle (3)
  Marinella Coco (3)
  
  1. Department of Sciences of Formation, University of Catania, Catania, Italy
  2. Neurological Operative Unit, Cannizzaro Hospital, Catania, Italy
  3. Sezione di Fisiologia, Dipartimento di Scienze Biomediche e Biotecnologiche, University of Catania, Viale Andrea Doria 6, 95125, Catania, Italy
  
• 刊物类别：Medicine
• 刊物主题：Medicine & Public Health
  Neurology
  Neuroradiology
  Neurosurgery
  Psychiatry
  
• 出版者：Springer Milan
• ISSN：1590-3478

文摘

We compared, in 20 subjects, the effects of high blood lactate levels on amplitude and latency of P1, N1, P2 and N2 components of lower limb somatosensory evoked potential (SEP), an useful, noninvasive tool for assessing the transmission of the afferent volley from periphery up to the cortex. SEPs were recorded from CPz located over the somatosensory vertex and referenced to FPz with a clavicle ground. Measurements were carried out before, at the end as well as 10 and 20 min after the conclusion of a maximal exercise carried out on a mechanically braked cycloergometer. After the exercise, P2–N2 amplitudes as well as latency of P1 and N1 components showed small but significant reductions. On the contrary, latency of N2 component exhibited a significant increase after the exercise’s conclusion. These results suggest that blood lactate appears to have a protective effect against fatigue, at least at level of primary somatosensory cortex, although at the expense of efficiency of adjacent areas. Keywords Maximal exercise Blood lactate Somatosensory evoked potentials Man