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Biomedical subjects

G Dolce

Publications and source records attributed to G Dolce.

At least 19 recordsLinked to original sources
PubMed1987

Cortical and cervical stimulation after hemispheric infarction.

Cortical and cervical stimulation has been performed in 20 patients with hemiparesis or hemiplegia due to hemispheric infarction and in 20 control subjects. The motor action potentials (MAPs) were recorded from biceps and thenar muscles. MAPs evoked by stimulation of the undamaged hemisphere were normal in 18 out of 20 patients and in two there was a slight increase of central conduction time (CCT). The stimulation of the motor cortex of the damaged hemisphere did not evoke any response in 15 patients; in two the MAPs were absent in one muscle and in the remaining three were delayed in one or both muscles. Cervical MAPs were normal in 18 patients and delayed in the thenar muscle in two patients.

Action Potentials↗
PubMed1980

Star-like display of EEG spectral values.

A new method of displaying the results of EEG spectral analysis is described. By means of Kiviat graphs some variables of two homologous derivations are represented by coplanar vectors beginning from a common centre. A symmetrical good system appears star-shaped. Successive evaluations are superimposed on the first one. The method allows a string right-left correlation and is particularly suitable for long term evaluations.

Data Display↗
PubMed1980

[Visual and computerized analysis of EEG during transcendental meditation and sleep (author's transl)].

Polygraphic records (EEG, EOG, heart rate) were obtained of 5 subjects during and after transcendental meditation (TM) as well as during night sleep. The records were analyzed twice. During TM the amplitude of the alpha-waves was higher as before TM and appeared continuously. Bilateral theta-bursts were also observed. The same EEG changes were seen during relaxation with closed eyes. The discriminance-analysis of 5 frequency-bands of the EEG recorded from C3 showed either no differences in dominant frequency, power and variancy. No differences were observed between the flat EEGs recorded during TM or sleep. The heart rate was significantly slower during meditation or light sleep - when a flat EEG (stage 1) was recorded - as when the recording showed an alpha-rhythm. The vigilosomnograms of all our subjects were normal. The subjects reported that they experienced an increased relaxation, alertness and floating consciousness. They were able to maintain themselves for unusually long time in a state of decreased alertness (stages W1;10).

Adult↗