Motor Cortex

Publication Title: 
PloS One

This study capitalizes on individual episodic memories to investigate the question, how dif-ferent environments affect us on a neural level. Instead of using predefined environmental stimuli, this study relied on individual representations of beauty and pleasure. Drawing upon episodic memories we conducted two experiments. Healthy subjects imagined pleasant and non-pleasant environments, as well as beautiful and non-beautiful environments while neural activity was measured by using functional Magnetic Resonance Imaging.

Author(s): 
Vedder, Aline
Smigielski, Lukasz
Gutyrchik, Evgeny
Bao, Yan
Blautzik, Janusch
Pˆppel, Ernst
Zaytseva, Yuliya
Russell, Edmund
Publication Title: 
Physiology & Behavior
Author(s): 
Klemm, W. R.
Publication Title: 
Brain Research Bulletin

We previously found that the center from which animal hypnosis is controlled in the rabbit is located in the area that includes the brachium conjunctivum and locus coeruleus (LC-BC) of the brainstem. Microinjection was used to investigate functions of cholinergic fibers in this area in relation to animal hypnosis. The duration of animal hypnosis (DAH) induced by inversion was diminished to about 60% of the controls by microinjecting atropine into the LC-BC, whereas microinjection of carbachol prolonged the DAH to 3.5 times that of the controls.

Author(s): 
Fujishita, M.
Hisamitsu, T.
Takeshige, C.
Publication Title: 
Zhurnal Vysshe? Nervno? Deiatelnosti Imeni I P Pavlova

Dynamics of structural changes of coherent relations between electrical activity of sensorimotor and premotor cortical areas of both cerebral hemispheres during and after "animal hypnosis" was studied by spectral-correlative analysis in rabbits. It was shown that "animal hypnosis" had very long-lasting trace processes, i.e., hypnotic structure of coherent relations of electrical activity in the cerebral cortex was maintained during several days.

Author(s): 
Rusinova, E. V.
Publication Title: 
Zhurnal Vysshe? Nervno? Deiatelnosti Imeni I P Pavlova

Influence of "animal hypnosis" on the process of development of motor polarization dominant created by the action of DC anode on the cortical sensorimotor area was studied in rabbits. It was shown that "animal hypnosis" induced at the dominant optimum elicited long-term (up to 2-4 days) inhibition of motor reaction of the "dominant" limb to sensory test stimuli.

Author(s): 
Rusinova, E. V.
Publication Title: 
Zhurnal Vysshe? Nervno? Deiatelnosti Imeni I P Pavlova

Intercentral relations of electrical activity of sensorimotor and premotor cortical areas of the right and left hemispheres were studied by means of coherence analysis during interaction of "animal hypnosis" and motor polarization dominant created by the action of DC anode on the area of the left hemisphere in rabbits. It was shown that the session of the "animal hypnosis" performed on the background of the optimum of polarization dominant elicited disappearance of asymmetry of coherence in the delta-range frequency of electrical activity of the examined cortical areas.

Author(s): 
Rusinova, E. V.
Davydov, V. I.
Publication Title: 
Zhurnal Vysshe? Nervno? Deiatelnosti Imeni I P Pavlova

The state of "animal hypnosis" in rabbits was created by the DC current anode applied to the sensorimotor cortical area of the left hemisphere. It was impossible to elicit the "animal hypnosis" during the optimum of the dominant. The state of "animal hypnosis" could be easily elicited against the background of weak motor dominant on the next day after its creation. The "animal hypnosis" restored the "left" motor dominant after its extinction.

Author(s): 
Rusinova, E. V.
Publication Title: 
Zhurnal Vysshe? Nervno? Deiatelnosti Imeni I P Pavlova

The electrical activity of the left and right sensorimotor cortex and left and right dorsal hippocampus (CA3 fields) was recorded during "animal hypnosis" in rabbits. The "animal hypnosis" produced asymmetry in the spectral power of the hippocampal electrical activity due to an increase in the power of delta 1, delta 2, and theta 1 components in the left-hippocampus and decrease in the spectral power in the same ranges in the right-hippocampus.

Author(s): 
Rusinova, E. V.
Roshchina, G. Ia
Publication Title: 
Zhurnal Vysshe? Nervno? Deiatelnosti Imeni I P Pavlova

The electrical activity of the right and left sensorimotor and premotor cortical areas and right and left medulary reticular formation was recorded during "animal hypnosis" in rabbits. In this state, the spectral power of potentials (predominantly, in the delta-range) recorded from the left reticular formation was higher than that recorded from the right side. The value of the function of coherence between the right and left reticular recordings was decreased to 0.1-0.2 in the whole frequency range.

Author(s): 
Rusinova, E. V.
Roshchina, G. Ia
Publication Title: 
Archives Italiennes De Biologie

The aim of the experiment was to study whether the activity of the primary sensory-motor (S1/M1), supplementary motor (SMA) and pre-motor (PMA) areas during fingers movement is modulated by hypnotic susceptibility and hypnosis. Cortical activity was studied through functional Magnetic Resonance Imaging (fMRI) during a finger-to-thumb opposition task in awake (Highs) and hypnotized highly susceptible (H-Highs) as well as in awake non susceptible subjects (Lows).

Author(s): 
Gemignani, A.
Tosetti, M.
Montanaro, D.
Biagi, L.
Ghelarducci, B.
Guazzelli, M.
Santarcangelo, E. L.

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