Periodicity

Publication Title: 
Biologicals: Journal of the International Association of Biological Standardization

INTRODUCTION: Most African countries are challenged in recruiting and retaining voluntary blood donors by cost and other complexities and in establishing and implementing national blood policies. The availability of replacement donors who are a cheaper source of blood has not enhanced repeat voluntary donor initiatives. METHODS: An overview of activities for recruiting and retaining voluntary blood donors was carried out. Donor records from mobile sessions were reviewed from 2002 to 2008.

Author(s): 
Owusu-Ofori, S.
Asenso-Mensah, K.
Boateng, P.
Sarkodie, F.
Allain, J.-P.
Publication Title: 
Annals of the New York Academy of Sciences
Author(s): 
Ravitz, L. J.
Publication Title: 
Sleep

The following describes a case of rhythmic movement disorder successfully treated with hypnosis. Hypnosis and its use in sleep disorders are discussed, and it is hypothesized that hypnosis is an effective intervention in disorders that occur at the interface between waking and sleep.

Author(s): 
Rosenberg, C.
Publication Title: 
Archives Italiennes De Biologie

Different approaches to the study of the relationship between hippocampal electrical activity and behavior have shown that hippocampal EEG varies according to different behavioral aspects. In particular, a rhythmic slow activity (RSA, Theta rhythm) can be recorded during voluntary movements and to a lesser degree during immobility. In laboratory experiments, we tried to evaluate the influence on the hippocampal EEG of external stimuli evoking emotional or cognitive responses.

Author(s): 
Fontani, G.
Carli, G.
Publication Title: 
The American Journal of Clinical Hypnosis

We report on a case of a female patient who was successfully treated with hypnosis for warts on 2 occasions separated by an interval of 7 years. Of note is the fact that she had low expectations regarding the benefit to be derived from hypnosis and did not at first appear to be highly hypnotizable.

Author(s): 
Goldstein, Robert H.
Publication Title: 
Zhurnal Vysshe? Nervno? Deiatelnosti Imeni I P Pavlova

Defensive dominanta was produced in four rabbits with electrodermal rhythmic stimulation of the left fore paw with the frequency of 0.5 Hz. During testing the dominanta with acoustical stimuli, the paw muscles responded with either a decrease in its non-rhythmic activity or rhythmic quiver with the frequency close to that of electrodermal stimulation. In intersignal periods, the paw shuddered with mean intervals of about 2 seconds.

Author(s): 
Bogdanov, A. V.
Galashina, A. G.
Kulikov, M. A.
Publication Title: 
Neuroscience and Behavioral Physiology

A defensive dominant was created in rabbits using rhythmic electrocutaneous stimulation of the left forelimb at a frequency of 0.5 Hz. After stimulation ended, the latent excitation state was tested using sound stimuli. Animals responded either with increases in non-rhythmic paw muscle activity or with rhythmic twitching of the paw at a frequency close to that of the electrocutaneous stimulation. After hypnotization, the incidence of rhythmic responses to the stimulation testing the dominant focus increased, while the incidence of non-rhythmic responses decreased.

Author(s): 
Galashina, A. G.
Kulikov, M. A.
Bogdanov, A. V.
Publication Title: 
Zhurnal Vysshe? Nervno? Deiatelnosti Imeni I P Pavlova

A hidden excitation focus (dominanta focus) was produced in the rabbit's CNS by threshold electrical stimulation of the left forelimb with the frequency of 0.5 Hz. As a rule, after the formation of the focus, pairs of neurons with prevailing two-second rhythm in their correlated activity were revealed both in the left and right sensorimotor cortices (with equal probabilities 29.3 and 32.4%, respectively).

Author(s): 
Bogdanov, A. V.
Galashina, A. G.
Publication Title: 
Neuroscience and Behavioral Physiology

A cryptic focus of excitation (a dominant focus) was created in the brains of rabbits by threshold stimulation of the left limb with a current at a frequency of 0.5 Hz. After creation of a focus, there were equal probabilities of detecting pairs of neurons whose linked activity was dominated by a 2-sec rhythm in the sensorimotor cortex of both the right and left hemispheres (29.3% and 32.4%, respectively).

Author(s): 
Bogdanov, A. V.
Galashina, A. G.
Publication Title: 
Zhurnal Vysshe? Nervno? Deiatelnosti Imeni I P Pavlova

A hidden excitation focus of the rhythmic nature (a rhythmic defensive dominant focus) was produced in the rabbit's CNS. The focus was formed by means of threshold electrodermal stimulation of the left forelimb by series of pulses consisting of 15-20 stimuli with 2 s intervals between the pulses. Correlated activity of cells in the sensorimotor cortex of the right and left brain hemispheres was analyzed.

Author(s): 
Bogdanov, A. V.
Galashina, A. G.
Karamysheva, N. N.

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