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A comparative study of two kinds of respiration (normal air and mixed with 4% CO2) was carried out in 8 healthy students. During the three experiments, each one lasting over 120 min, CO2 or air was inhaled using a mask. Blood samples were taken from the fingers, an average increase of pCO2 of 1.9 mm (p less than 0.01) and pO2 of 7.3 mm (p less than 0.01) was found during CO2-inhalation. The ECG and EEG were recorded and reaction times to tone stimuli in a foreperiod reaction time experiment were measured. During CO2-inhalation a clear reduction of the power in the alpha-band was found in frontal, central and occipital region in the order of 23% (p less than 0.05) and 12% (p less than 0.05) and 22% (p less than 0.01). The heart rate interval decreased significantly by 2.3% (p less than 0.05). No significant changes were found in CNV, reaction time and percentage event-related alpha-desynchronization.
G Pfurtscheller, and
H Metzler, and
I Szirmai, and
A Aranibar, and
B Pfurtscheller
July 1980,
The Japanese journal of antibiotics,
G Pfurtscheller, and
H Metzler, and
I Szirmai, and
A Aranibar, and
B Pfurtscheller
February 1974,
European journal of applied physiology and occupational physiology,
G Pfurtscheller, and
H Metzler, and
I Szirmai, and
A Aranibar, and
B Pfurtscheller
September 1980,
Pathologie-biologie,
G Pfurtscheller, and
H Metzler, and
I Szirmai, and
A Aranibar, and
B Pfurtscheller
January 1981,
Annales de pediatrie,
G Pfurtscheller, and
H Metzler, and
I Szirmai, and
A Aranibar, and
B Pfurtscheller
March 1978,
Deutsche medizinische Wochenschrift (1946),
G Pfurtscheller, and
H Metzler, and
I Szirmai, and
A Aranibar, and
B Pfurtscheller
January 1980,
Journal de gynecologie, obstetrique et biologie de la reproduction,
G Pfurtscheller, and
H Metzler, and
I Szirmai, and
A Aranibar, and
B Pfurtscheller
January 1974,
Archiv fur Geschwulstforschung,
G Pfurtscheller, and
H Metzler, and
I Szirmai, and
A Aranibar, and
B Pfurtscheller
September 1980,
Ceskoslovenska gynekologie,
G Pfurtscheller, and
H Metzler, and
I Szirmai, and
A Aranibar, and
B Pfurtscheller
October 1981,
Deutsche medizinische Wochenschrift (1946),
G Pfurtscheller, and
H Metzler, and
I Szirmai, and
A Aranibar, and
B Pfurtscheller
January 1980,
Sangre,
