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Abstract

Objective: The aim of this study was to examine the importance of social bonds for our ability to cope with traumatizing incidents. It is theorized that the dysfunctions related to trauma, such as alexithymia and dissociation can be linked to certain parental attitudes towards a child in an early developmental stages together with characteristics of the trauma itself, namely the identity of the perpetrator, understood as his or her social closeness to the victim. Participants: A total number of 60 participants, selected randomly from a population, psychiatric hospital patients as well as psychotherapy centers were tested using four questionnaires (TAS-26, PSD, CES, PBI). Results: The analyses revealed that high alexithymia levels are related to demanding attitude of the caregivers, whereas dissociation is more common in people who remember their parents as inconsequent and emotionally labile. Findings related to the connection between the identity of a perpetrator of the trauma and the sequelae showed that the dissociation levels were significantly higher in victims who suffered abuse from the hands of family member or friends than those who were harmed by unknown people.
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Abstract

The present study consisted of two experiments. The goal of the first experiment was to establish the just noticeable differences for the fundamental frequency of the vowel /u/ by using the 2AFC method. We obtained the threshold value for 27 cents. This value is larger than the motor reaction values which had been observed in previous experiments (e.g. 9 or 19 cents). The second experiment was intended to provide neurophysiological confirmation of the detection of shifts in a frequency, using event-related potentials (ERPs). We concentrated on the mismatch negativity (MMN) - the component elicited by the change in the pattern of stimuli. Its occurrence is correlated with the discrimination threshold. In our study, MMN was observed for changes greater than 27 cents - shifts of ±50 and 100 cents (effect size - Cohen’s d = 2.259). MMN did not appear for changes of ±10 and 20 cents. The results showed that the values for which motor responses can be observed are indeed lower than those for perceptual thresholds.
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Abstract

The role of the addition of nitrogen to the discharge plasma of CO lasers on thermodynamic properties and composition of the laser active medium is discussed here. It is shown that nitrogen addition improves laser characteristics and changes the composition of the laser active medium. The addition of nitrogen significantly decreases CO dissociation level and concentrations of C atoms created in plasma-chemical reactions of laser discharge.
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