Contribution of visual feedback to the hippocampal theta activity in mice

Norihiro Katayama, Keita Hidaka, Akihiro Karashima, Mitsuyuki Nakao

Research output: Contribution to conferencePaperpeer-review

Abstract

In the hippocampus of rodents, rhythmic electroencephalographic (EEG) activity at 4-12 Hz (theta activity) is observed when the animal is running. Although it has been reported that the theta activity is modulated by various sensory stimuli, the contribution of the visual feedback has not fully understood. In this study, we analyzed the relationship between the locomotion speed and the hippocampal theta activity of freely behaving mice in a virtual environment. It was found that the frequency and the amplitude of the theta activity were correlated with the locomotion speed of the mouse in the virtual space as well as in the real open field. When the visual feedback was switched-off, the frequency and the amplitude of the theta activity were slightly decreased without changing the proportionality constant of the locomotion speed. These data indicate the contribution of the visual feedback to the hippocampal theta activity.

Original languageEnglish
Pages306-307
Number of pages2
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event2013 International Joint Conference on Awareness Science and Technology, iCAST 2013 and 6th International Conference on Ubi-Media Computing, UMEDIA 2013 - Aizuwakamatsu, Japan
Duration: 2013 Nov 22013 Nov 4

Other

Other2013 International Joint Conference on Awareness Science and Technology, iCAST 2013 and 6th International Conference on Ubi-Media Computing, UMEDIA 2013
CountryJapan
CityAizuwakamatsu
Period13/11/213/11/4

Keywords

  • Hippocampus
  • Immersive virtual realty
  • Locomotion
  • The sense of reality
  • Theta wave

ASJC Scopus subject areas

  • Software

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