Jessica Parrot

Learn More
This study aimed at comparing for their cardiovascular effects: a pile-driver noise (P), a gunfire noise (G), a road traffic noise (T), an intermittent pink noise (R). All noises were presented at the same LAeq = 75 dB for 15 min each. Some 120 subjects were divided into 8 subgroups of 15 subjects each: OM (men between 40 and 50 years of age), OF (women,(More)
Heart-rate and blood pressure measurements allowed analysis of cardiovascular responses (CVRs) to an intermittent pink noise in 9 Type A (coronary prone) and 8 Type B (non-prone) female subjects (Ss). If all Ss are sorted out in sensible, moderately sensible and poorly sensible subgroups, according to similarity in evolution of their heart rates and by(More)
A series of patients supported with long-term venoarterial perfusion is presented. Gas exchange was achieved with a membrane oxygenator at flows usually in excess of 50% of the patient's baseline cardiac output. Perfusions were maintained for 7 to 12 days. Two major complications were encountered: thromboembolic myocardial infarction and liquefaction(More)
Absolute thresholds at 4 and 6 kHz were tested in three sessions before and after 20 min of exposure to 105 dB(A) pink noise in 12 young normal-cycling females, 11 young females on oral contraceptives and 8 young men. Women on contraceptives showed lower resting thresholds, larger temporary threshold shift (TTS) and higher recovery rates than normal-cycling(More)
The predominant ear has been identified on the basis of binomial tests in 12 subjects at 4 kHz and in 6 subjects at 6 kHz. On an average its hearing thresholds are significantly lower than those of the other ear. At 4kHz its response to an acoustical stress appears to be proportionally more important than that of the other ear, but is equivalent at 6 kHz.(More)
Human subjects were exposed for two (or three) sessions to the same runs of 103 dB (A) pink noise-steps alternating with 40 dB (A) low level pink noise. From one session to the following their cardiovascular responses seem to achieve an adjustment. Differences between them depend on two features: (1) some of them achieve a negative feedback reaction from(More)
Noise-induced temporary and permanent threshold shifts of 9 brewery workers were obtained by means of 6 hearing tests during two consecutive days. Subjects had been exposed 6 to 8 hours daily to a bottling noise for approximately 15 years. Results confirm that empirical rules predicting exponential growth and recovery of TTS during and following a work-day(More)
In a group of 13 female subjects submitted in three sessions to regularly alternating pink noise-steps, different techniques were proposed to cope with individual differences in cardiovascular responses. Application of a clustering algorithm to intercorrelation data of individual heart rates (HR) resulted in three subsets of 'sensitive' (S), 'moderately(More)
Hearing performance at 4000 and 6000 Hz was observed in height young female subjects before and after they were submitted to an acoustical stress (105 dBA continuous pink-noise for twenty min) during the pre-ovulatory phase and the menstrual phase respectively. Complementary observations were made in height young female subjects under oral contraceptives in(More)
Eighteen female undergraduate subjects were submitted three times to an intermittent 55 min. pink-noise made of 6 x 5 min. periods at 103 dB (A), alternating with 5 x 5 min periods at 40 dB (A). Arterial blood-pressure was measured by the auscultatory method during the last minute before each noise-step (initial value) and during the first minute following(More)