Nikolay G. Bibikov

Learn More
We tested two hypotheses to determine whether dorsal cochlear nucleus (DCN) neurons are specialized to derive directionality from spectral notches: DCN neurons exhibit greater spectral-dependent directionality than ventral cochlear nucleus (VCN) neurons, and spectral-dependent directionality depends on response minima (nulls) produced by coincidence of best(More)
Single neuron responses to sinusoidal 20 Hz amplitude modulated tone bursts (612.5 ms stimulus-on time at the rate of once per 2.2 s) were studied in the auditory midbrain (torus semicircularis) of the immobilized grass frog (Rana temporaria temporaria). The characteristic frequency stimuli at 30 dB above the minimum threshold included 12 full modulation(More)
Auditory evoked potentials (AEPs) to clicks and tonal pulses were recorded from medulla and midbrain in Xenopus laevis laevis. They comprise three components: an initial peak (I) at 2.2-3 ms latency, a fast series of peaks (F) at 5-15 ms latency, and a slow negative wave (S) at 20-40 ms latency. In medullary recordings, the initial peak was largest, whereas(More)
We recorded extracellular activity from 402 single units located in the inferior colliculus (IC) of barbiturate-anesthetized albino mice. The stimuli were pure tones at characteristic frequency (CF) with durations of 10, 40 and 100 ms and intensities ranged from 5 to 25 dB above unit's minimum threshold (MT). The tones were presented with different(More)
The temporal dynamic of firing of single neurons, located in different nuclei of the auditory pathway in the course of sound signals presentation is analyzed. The main features of short-term (<1 s) and long-term (>5 s) adaptation of firing activity in ascending way of an auditory analyzer are compared. In many units during peristimulus adaptation a(More)
Background activity of 62 neurons in cat cerebral cortex was recorded in the state of slow-wave sleep for evaluation of the firing statistics. In according to their statistical characteristics neurons were subdivided in three groups. In the first group deviation from the Poisson process were comparatively small, and revealed as fragments of increased(More)
The ability of 109 single units in the midbrain acoustic centre of frogs (Rana ridibunda, Rana temporaria) to reproduce 10%, 20 Hz sinusoidal amplitude modulation of a long-duration characteristic frequency tone was studied. The sinusoidal modulation was presented either in isolation or summed with a low-frequency (0-50 Hz) noise. Recordings were obtained(More)
  • N G Bibikov
  • Zhurnal vyssheĭ nervnoĭ deiatelnosti imeni I P…
  • 1977
Some neurones in the torus semicircularis of paralyzed lake frogs (Rana ridibunda) exhibited strong response habituation to tonal bursts following with interstimuli intervals of 1 to 5 sec. The habituation became less evident with a devrease of the repetition rate or increase of the stimulus intensity. These units revealed the phenomenon of "postzero"(More)
Using rapid Coldgi technique, studies have been made on the structure of the nervous cells in torus semicircularis of the frog Rana ridibunda. 277 cells observed in frontal and sagittal sections were classified into 3 groups. 198 cells with an oval body had their basal dendrite spreading caudoventrally. The dendritic tree of these cells does not leave torus(More)