Neuroleptic malignant syndrome--3 case reports

An account is given of three patients who exhibited a malignant neuroleptic syndrome after the administration of neuroplegics. Like other authors, we identified typical elicitation factors and clinical characteristics. In one case a catatonic dilemma with lethal issue was observed. In the final case dealt with in this paper, the renewed application of neuroplegics following the termination of the malignant neuroleptic syndrome was tolerated without complications, whereas in the case of an epileptic patient with damage to the brain, the malignant neuroleptic syndrome returned upon dosage increase.     

Additivity of loudness across critical bands: A critical test

The use of magnitude estimation as well as axiomatic measurement theory has led to the suggestion that loudness adds across critical bands. In the present paper, we challenge this postulate by applying a more sensitive methodology, based on Falmagne’s (1976) random conjoint measurement procedure. A necessary condition for additivity of loudness was investigated in tone complexes consisting of 2-kHz and 5-kHz (resp. 3-kHz) components; the results showed systematic deviations from additivity. We argue that these deviations are due to asymmetric masking of the higher component by the lower one, and we propose a tentative quantitative model to account for the data. Such a model is in line with results from tone-on-tone masking, which show masking to be effective over a range of several critical bands.     

Temporal coordination of alternative and simultaneous aiming movements of constrained timing structure

Two experiments are reported addressing the preparation and initiation of movements with equal or unequal timing properties for both hands. Temporal coordination was examined in two movement tasks: one in which both hands performed the movements simultaneously (simultaneous aiming task) and one in which only one alternative of two possible movements was executed (choice aiming task). For each task a different group of subjects was used. Besides the timing relationships between both movements, the effects of preparation interval (1, 3, and 5 s), the average velocity (7, 14, 17.5, and 70 cm/s), the presence of advance information about the required velocity of the movement(s), and practice were investigated. Based on the common- and the specific-timing notions, distinct hypotheses were tested as to the effects of the variables on the temporal coordination as revealed by reaction time. A main result was that the effects of timing differences between the hands was task specific. For the choice task the data are in agreement with the common-timing notion of coordination, i. e., only one timing demand at a time can be prepared, whereas in the simultaneous task evidence was obtained for the specific-timing notion, i. e., independent preparation and initiation of different timing properties for the hands. However, it is argued that the results of the choice task probably do not reflect a general inability to prepare movements of different timing requirements for both hands, but is related to a task-specific strategy of selective preparation.     

Electroencephalographic findings in vertebro-basilar circulation disorders]

The method of electroencephalography was used for examining 86 patients with clinical signs of vertebrobasilar blood supply disorders and bulbopontine localization of ischemic phenomena. Light to moderate diffuse alterations were found which manifested themselves, on the one hand, in a reduction in tension with a tendency toward desynchronization of the alpha rhythm and, on the other, in interspersed theta waves, sometimes with temporal localization. The determination of the location of the vascular process depends upon both the clinical syndrome and the performance of function tests during the electroencephalographic examination. The disproportion between the excellent organization of the bioelectrical activity and the severe clinical picture is sufficient reason to consider vascular damages to the pontobulbar portion of the brain stem.     

Differential-psychologische Untersuchungen zum Vigilanzverhalten

Zusammenfassung Mit Hilfe von Korrelationsmethoden wurden inter-individuelle Leistungsunterschiede in einer ein- und einer mehrflächigen Vigilanzaufgabe untersucht. In beiden Aufgaben korrelieren bestimmte Vigilanzscores mit Interferenzindikatoren im Stroop-Versuch. In der mehrflächigen Anordnung zeigte sich eine negative Korrelation zwischen der Entdeckungswahrscheinlichkeit und der Rate der falschen Alarme. Hinsichtlich der zeitlichen Merkmale der Vigilanzleistung ergab sich, daß die Vpn den geringsten Abfall der Entdeckungswahrscheinlichkeit erkennen lassen, die zu Beginn der Vigilanzaufgabe die Rate der falschen Alarme am stärksten reduzieren konnten. Die Ergebnisse wurden im Rahmen des detection-Modells interpretiert.

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Experiments in individual differences of vigilance behavior

Summary This paper is concerned with individual differences of vigilance performance in a simple and a complex vigilance task. In both tasks certain aspects of vigilance behavior were correlated with interference in the Color Word Test by Stroop. In the complex vigilance task there was a negative correlation between the probabilities of signal detections and false alarms rates. With regard to the temporal characteristics of vigilance behavior it was found out that subjects with the least decrease of detection rate showed the greatest reduction of their false alarms rate to the beginning of the vigilance task. The results were discussed in the context of the detection model.

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Teil II der Dissertation, die im Januar 1969 der Philosophischen Fakultät der Freien Universität Berlin vorgelegt wurde.     

Monitoring Perceptions of Social Progress and Pride of Place in a South African Community

A social indicators community project was conducted in 2007 to monitor living standards and quality of life in Rhini, a low-income suburb of Grahamstown, Makana Municipality, South Africa. Since 1994, under democratic rule, considerable progress has been made in service delivery to the formerly disadvantaged in South African society in terms of access to housing, infrastructure, and a social safety net to mitigate the high rate of unemployment. A representative cross-sectional household study (n 1020) conducted in 2007 in Rhini found that a positive assessment of the household’s situation and personal life satisfaction did not reflect better living conditions. Lack of income and employment opportunities appeared to dilute gains from higher living standards. The project also inquired into attitudes to place names and a proposed name change for the city under discussion at the time of the survey. It is argued that a place name with which one can identify may be as important as service delivery to enhance community satisfaction and overall quality of life. Dissatisfied residents who had limited access to services and expressed less civic pride were more likely than others to opt for a proposed name change for the city of Grahamstown that would better reflect the country’s new identity and multicultural heritage. It is concluded that a useful pursuit for community quality-of-life studies in countries undergoing social transformation will be to inquire into the complex combination of factors that drive perceptions of material and symbolic progress.     

Reliability and plasticity of response inhibition and interference control

This study investigated the internal reliability, temporal stability and plasticity of commonly used measures of inhibition-related functions. Stop-signal, go/no-go, antisaccade, Simon, Eriksen flanker, Stroop and Continuous Performance tasks were administered twice to 23 healthy participants over a period of approximately 11 weeks in order to assess test–retest correlations, internal consistency (Cronbach’s alpha), and systematic between as well as within session performance changes. Most of the inhibition-related measures showed good test–retest reliabilities and internal consistencies, with the exception of the stop-signal reaction time measure, which showed poor reliability. Generally no systematic performance changes were observed across the two assessments with the exception of four variables of the Eriksen flanker, Simon and Stroop task which showed reduced variability of reaction time and an improvement in the response time for incongruent trials at second assessment. Predominantly stable performance within one test session was shown for most measures. Overall, these results are informative for studies with designs requiring temporally stable parameters e.g. genetic or longitudinal treatment studies.     

Understanding in the social sciences and history

Understanding in its widest sense is the aim of all rational knowledge. A distinction can be made between interpretation (leading to the understanding of meanings) and explanation (leading to the understanding of facts). The view that in the social sciences facts and meanings are the same is criticized. In respect of the specific understanding of human and social facts empathetic and rational understanding are distinguished and some of the difficulties pointed out inherent in both, in particular with regard to testability. On the other hand, it is found that a purely behaviouristic approach, although possible, would not be completely satisfactory, so that in spite of all difficulties the social sciences (history included) cannot do without specific understanding, as a heuristic device as well as an aim.