title: Frequency spectrum might act as communication code between retina and visual cortex I.
abstract: OBJECTIVE
  To explore changes and possible communication relationship of local potential signals recorded simultaneously from retina and visual cortex I (V1).
  
  
  METHODS
  Fourteen C57BL/6J mice were measured with pattern electroretinogram (PERG) and pattern visually evoked potential (PVEP) and fast Fourier transform has been used to analyze the frequency components of those signals.
  
  
  RESULTS
  The amplitude of PERG and PVEP was measured at about 36.7 µV and 112.5 µV respectively and the dominant frequency of PERG and PVEP, however, stay unchanged and both signals do not have second, or otherwise, harmonic generation.
  
  
  CONCLUSIONS
  The results suggested that retina encodes visual information in the way of frequency spectrum and then transfers it to primary visual cortex. The primary visual cortex accepts and deciphers the input visual information coded from retina. Frequency spectrum may act as communication code between retina and V1.
authors.affiliation: Life Science School, Fudan University, Shanghai 200433, China.
authors.forename: Xu
authors.initials: X
authors.lastname: Yang
authors.affiliation: Department of Chemical and Biological Engineering, Institute of Bioengineering, Zhejiang University, Hangzhou 310058, Zhejiang Province, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Gong
authors.affiliation: Department of Ophthalmology, Shanghai Tenth People's Hospital, the Advanced Institute of Translational Medicine and School of Software Engineering, Tongji University, Shanghai 200433, China.
authors.forename: Jian-Wei
authors.initials: JW
authors.lastname: Lu
keywords: fast Fourier transform; pattern electroretinogram; pattern visually evoked potential; retina; visual cortex I