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B behaviour pattern
D. Papakostopoulos,
ed. / Psychophysiology
Society abstracts
187
The paramenstrual group was older, more anxious, and reported more daily symptoms during all menstrual phases than the other groups. Overall, there were few group or menstrual phase differences on the autonomic variables, although these were sensitive to experimental demands. However, the groups differed significantly in the duration of SXL reactions to tasks during the different phases. The menstrual and paramenstrual groups also showed differences in HR responsiveness across phases during the film. Significant correlations between physiological reactions and symptoms were observed within groups.
BASELINE PATTERN
INFLUENCE
M. TRIMMEL, Institute
ON CNV AND ERP IN TYPE A/B
E. GROLL-KNAPP,
of Environmental
Hygiene,
BEHAVIOUR
and C. ENICHLMEIER
University of Vienna, Austria
39 right-handed unpaid students participated in a CNV experiment. 19 of them were pre-selected for type A (coronary-prone behaviour type) and 20 for type B by means of a questionnaire (JAS). After the experiment subjects were divided into a and b again by a stress interview (Rosenman, 1978). So 4 groups of subjects were formed: Type Aa scoring both times type A-behaviour; type Bb; Ab; and Ba. 60 pairs of S,-S, (click) were presented and followed by button pressing (right hand). Constant IT1 of 13 set and IS1 of 2 set were used. EEG was recorded about 2 cm behind F3 (F;) and 2 cm behind F4 (Fi) and was amplified from DC to 30 Hz. Records of 10 set (2.2 set baseline) were digitalized by a lo msec rate. Selective averaging was done according to 3 criteria for the baseline characteristics (‘UP’: Negative shift of 2 10 pV/sec; ‘DOWN’: Positive shift of 2 10 ,uV/sec; ‘STABLE’: No change of 2 10 pV/sec). Results show no significant influence of the conditions on the CNV within the while sample. Yet there is a more positive motor potential (MP) for STABLE 9p I 0.05) at F;. At Fi a larger P300 (S,) was found for UP vs. DOWN (p I 0.05). Only group Aa showed a baseline effect (p 5 0.05) on CNV and CNVE (both are larger for DOWN vs. UP). In group Ba UP leads to a shorter latency of P300 at F; (S,) vs. DOWN - contrary to Bb ( p 5 0.05). At Fi UP leads to a larger P300 (S,) in Aa and a larger P200 (S,) in Ba compared to DOWN (p I 0.05). Also at Fi Aa shows a shorter latency of MP in UP compared to STABLE, while Bb shows a shorter latency of MP in DOWN compared to UP ( p 5 0.05). I-, general the results show different baseline effects on CNV and ERP Lomponents dependent on hemisphere and type A/B-behaviour pattern.
D. Papakostopoulos,
188
ed. / Psychophysiolog,:
Society abstracts
Reference Rosenman, R.H. (1978). The interview method of assessment of the coronary-prone pattern. In: Dembrosky, T.M., Weiss, ST.. Shields. J., Haynes. C. and Feinleib. Coronary-Prone Behaviour. Springer: New York, 55-69.
STIMULUS SPECIFICITY OF INDIVIDUAL PHASIC CARDIAC RESPONSE
Frank
DIFFERENCES
behaviour M. (Eds.).
IN THE
F. EVES and John H. GRUZELIER
Department
of Psychiatry,
Charing
Cross and Westminster
Medical School,
London,
U.K.,
Recent work has demonstrated individual differences in the long latency (15-20 set) cardiac response elicited by a novel high intensity auditory stimulus. Many subjects not exhibiting secondary acceleration (Accelerators) displayed a secondary deceleration (Decelerators). Further Accelerators evinced a greater magnitude short latency (2-4 set) accelerative peak than Decelerators (Eves and Gruzelier, 1983). The three studies (n = 112) of this paper focus on the phasic cardiac response to novel moderate intensity stimuli in these subgroups. Categorization into Accelerators (41.9%) and Decelerators (31.3%) was based on cardiac activity within a 17-50 set epoch following a single 127dB, one second stimulus. The first two studies also included a moderate intensity (72dB) habituation sequence. In studies 2 and 3, subjects received a warning stimulus 60 set prior to high intensity stimulation. Both subgroups exhibited phasic deceleration to the initial stimulus of the habituation sequence in studies 1 and 2. Hence differentiation with the loud tone did not reflect stereotypic responding. However in studies 2 and 3, individual differences re-emerged, the warning stimuli eliciting phasic acceleration and deceleration in Accelerators and Decelerators respectively. Discussion focuses on the ability of stimulus characteristics alone to predict the cardiac response elicited by novel stimuli.
Reference Eves, F.F. and Gruzelier,
J.H. (1983). Biological
Psychology.
ed. / Psychophysiology
Society abstracts
187
The paramenstrual group was older, more anxious, and reported more daily symptoms during all menstrual phases than the other groups. Overall, there were few group or menstrual phase differences on the autonomic variables, although these were sensitive to experimental demands. However, the groups differed significantly in the duration of SXL reactions to tasks during the different phases. The menstrual and paramenstrual groups also showed differences in HR responsiveness across phases during the film. Significant correlations between physiological reactions and symptoms were observed within groups.
BASELINE PATTERN
INFLUENCE
M. TRIMMEL, Institute
ON CNV AND ERP IN TYPE A/B
E. GROLL-KNAPP,
of Environmental
Hygiene,
BEHAVIOUR
and C. ENICHLMEIER
University of Vienna, Austria
39 right-handed unpaid students participated in a CNV experiment. 19 of them were pre-selected for type A (coronary-prone behaviour type) and 20 for type B by means of a questionnaire (JAS). After the experiment subjects were divided into a and b again by a stress interview (Rosenman, 1978). So 4 groups of subjects were formed: Type Aa scoring both times type A-behaviour; type Bb; Ab; and Ba. 60 pairs of S,-S, (click) were presented and followed by button pressing (right hand). Constant IT1 of 13 set and IS1 of 2 set were used. EEG was recorded about 2 cm behind F3 (F;) and 2 cm behind F4 (Fi) and was amplified from DC to 30 Hz. Records of 10 set (2.2 set baseline) were digitalized by a lo msec rate. Selective averaging was done according to 3 criteria for the baseline characteristics (‘UP’: Negative shift of 2 10 pV/sec; ‘DOWN’: Positive shift of 2 10 ,uV/sec; ‘STABLE’: No change of 2 10 pV/sec). Results show no significant influence of the conditions on the CNV within the while sample. Yet there is a more positive motor potential (MP) for STABLE 9p I 0.05) at F;. At Fi a larger P300 (S,) was found for UP vs. DOWN (p I 0.05). Only group Aa showed a baseline effect (p 5 0.05) on CNV and CNVE (both are larger for DOWN vs. UP). In group Ba UP leads to a shorter latency of P300 at F; (S,) vs. DOWN - contrary to Bb ( p 5 0.05). At Fi UP leads to a larger P300 (S,) in Aa and a larger P200 (S,) in Ba compared to DOWN (p I 0.05). Also at Fi Aa shows a shorter latency of MP in UP compared to STABLE, while Bb shows a shorter latency of MP in DOWN compared to UP ( p 5 0.05). I-, general the results show different baseline effects on CNV and ERP Lomponents dependent on hemisphere and type A/B-behaviour pattern.
D. Papakostopoulos,
188
ed. / Psychophysiolog,:
Society abstracts
Reference Rosenman, R.H. (1978). The interview method of assessment of the coronary-prone pattern. In: Dembrosky, T.M., Weiss, ST.. Shields. J., Haynes. C. and Feinleib. Coronary-Prone Behaviour. Springer: New York, 55-69.
STIMULUS SPECIFICITY OF INDIVIDUAL PHASIC CARDIAC RESPONSE
Frank
DIFFERENCES
behaviour M. (Eds.).
IN THE
F. EVES and John H. GRUZELIER
Department
of Psychiatry,
Charing
Cross and Westminster
Medical School,
London,
U.K.,
Recent work has demonstrated individual differences in the long latency (15-20 set) cardiac response elicited by a novel high intensity auditory stimulus. Many subjects not exhibiting secondary acceleration (Accelerators) displayed a secondary deceleration (Decelerators). Further Accelerators evinced a greater magnitude short latency (2-4 set) accelerative peak than Decelerators (Eves and Gruzelier, 1983). The three studies (n = 112) of this paper focus on the phasic cardiac response to novel moderate intensity stimuli in these subgroups. Categorization into Accelerators (41.9%) and Decelerators (31.3%) was based on cardiac activity within a 17-50 set epoch following a single 127dB, one second stimulus. The first two studies also included a moderate intensity (72dB) habituation sequence. In studies 2 and 3, subjects received a warning stimulus 60 set prior to high intensity stimulation. Both subgroups exhibited phasic deceleration to the initial stimulus of the habituation sequence in studies 1 and 2. Hence differentiation with the loud tone did not reflect stereotypic responding. However in studies 2 and 3, individual differences re-emerged, the warning stimuli eliciting phasic acceleration and deceleration in Accelerators and Decelerators respectively. Discussion focuses on the ability of stimulus characteristics alone to predict the cardiac response elicited by novel stimuli.
Reference Eves, F.F. and Gruzelier,
J.H. (1983). Biological
Psychology.