Noah A. Russell

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The hippocampus is thought to be important for spatial representation processes that depend on the integration of both self-movement and allocentric cues. The vestibular system is a particularly important source of self-movement information that may contribute to this spatial representation. To test the hypothesis that the vestibular system provides(More)
In order to investigate whether bilateral peripheral vestibular lesions cause long-term impairment of spatial learning, rats were tested in a reference memory radial arm maze learning task at least 5 weeks following a bilateral labyrinthectomy (BL) or sham control lesion. All control rats reached criterion (i.e., 1 error or less, averaged across 7 trials(More)
The hippocampus has a major role in memory for spatial location. Theta is a rhythmic hippocampal EEG oscillation that occurs at approximately 8 Hz during voluntary movement and that may have some role in encoding spatial information. We investigated whether, as part of this process, theta might be influenced by self-movement signals provided by the(More)
Vestibular information is known to be important for accurate spatial orientation and navigation. Hippocampal place cells, which appear to encode an animal’s location within the environment, are also thought to play an essential role in spatial orientation. Therefore, it can be hypothesized that vestibular information may influence cornu ammonis region 1(More)
A design for an inexpensive and reliable subminiature microdrive for recording single neurons in the freely moving animal is presented. The Scribe microdrive is small and lightweight and has been used successfully to record in freely moving rats and pigeons. It would also be suitable for recording in mice. The device is simple and inexpensive yet allows for(More)
Interest in interaction between the vestibular system and the hippocampus was stimulated by evidence that peripheral vestibular lesions could impair performance in learning and memory tasks requiring spatial information processing. By the 1990s, electrophysiological data were emerging that the brainstem vestibular nucleus complex (VNC) and the hippocampus(More)
Russell, Noah A., Arata Horii, Paul F. Smith, Cynthia L. Darlington, and David K. Bilkey. Lesions of the vestibular system disrupt hippocampal theta rhythm in the rat. J Neurophysiol 96: 4–14, 2006; doi:10.1152/jn.00953.2005. The hippocampus has a major role in memory for spatial location. Theta is a rhythmic hippocampal EEG oscillation that occurs at 8 Hz(More)
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