Limits of Neural Computation in Humans and Machines

Science and Engineering Ethics - Aicardi et al. (Ethical and social aspects of neurorobotics, Science and Engineering Ethics, 2020) look to neuroscience to mitigate the limitations of current...     

Object categorization by wild-ranging birds in nest defence

Animal Cognition - Despite object categorization being an important ability for the survival of wild animals, the principles behind this ability have been only scarcely studied using wild-ranging,...     

Dispositional Anxiety and Frontal‐Midline Theta: On the Modulatory Influence of Sex and Situational Threat

In their adaptive control hypothesis, Cavanagh and Shackman (2015) recently claimed that dispositional anxiety is correlated with frontal‐midline theta (FMθ) as a generic “need for control” signal of the anterior midcingulate cortex. Here, we tested this assumption, also considering potential modulatory influences of anticipatory threat and individuals’ sex. In a nonclinical sample of 168 participants (84 women), electroencephalogram was recorded while individuals performed a simple two‐choice task. Half of the participants were assigned to a threat anticipation condition (anticipation of public speaking), whereas the other half was assigned to a control condition. State anxiety was monitored across the experiment. Dispositional anxiety was assessed by self‐report scales, which were completed before individuals came to the laboratory. Target stimuli in the two‐choice task induced a transient increase in FMθ power that was subject to an interaction of dispositional anxiety, sex, and experimental group. Only in women who anticipated public speaking did we observe a substantial positive relation between dispositional anxiety and general FMθ power. Our results indicate that the link between dispositional anxiety and FMθ is not universal but rather depends on complex interactions of individuals’ sex and situational threat.     

Imagery-induced negative affect,social touch and frontal EEG power band activity

Social touch seems to modulate emotions, but its brain correlates are poorly understood. Here, we investigated if frontal power band activity in the electroencephalogram (EEG) during aversive mental imagery is modulated by social touch from one’s romantic partner and a stranger. We observed the highest theta and beta power when imaging alone, next so when being touched by a stranger, with lowest theta and beta activity during holding hands with the loved one. Delta power was higher when being alone than with a stranger or a partner, with no difference between the two. Gamma power was highest during the stranger condition and lower both when being alone and with the partner, while alpha power did not change as a function of social touch. Theta power displayed a positive correlation with electrodermal activity supporting its relation to emotional arousal. Attachment style modulated the effect of touch on the EEG as only secure but not insecure partner bonding was associated with theta power reductions. Because theta power was sensitive to the experimental perturbations, mapped onto peripheral physiological arousal and reflected partner attachment style we suggest that frontal theta power might serve as an EEG derived bio-marker for social touch in emotionally significant dyads.     

内容和形式之本质的一般问题

我曾说过,"形式"和"内容"(质料)这两个词被人们在多种涵义上使用.这些涵义须加以区分并尽量界定得更准确.     

Hurry up! The role of supervisors’ time urgency and self‐perceived status for autocratic leadership and subordinates’ well‐being

This study examines the connections among supervisors’ time urgency, their leadership behavior, and subordinate outcomes. Integrating cognitive perspectives on time urgency with contemporary thinking on the psychological experience of status, we reason that supervisors’ time‐urgent personality relates positively with their autocratic leadership behavior, and we cast supervisors’ self‐perceived status as a moderator of this linkage. Moreover, we enrich this leader‐centric perspective with a complementary, more follower‐centric view, recognizing that the consequences of supervisors’ time urgency likely extend beyond their own behavior to indirectly affect their subordinates’ well‐being at work. We tested our hypotheses using a field sample of 60 supervisors and 277 of their subordinates. Results indicate that (a) supervisors with higher time urgency are more likely to exhibit autocratic leadership behavior when they also perceive themselves as having relatively high status among subordinates, but not when perceiving lower status, and (b) supervisors’ time urgency exhibits a conditional indirect effect (via autocratic leadership) on subordinates’ work stress and time pressure experiences. Hence, this study illustrates an important boundary condition for the consequences of supervisors’ time urgency, and it demonstrates that this personality characteristic not only shapes supervisors’ leadership behavior but also affects the subordinates they are charged with leading.     

Differences between elite,junior and non-rowers in kinematic and kinetic parameters during ergometer rowing

This paper presents an analysis of the rowing parameters of differently skilled rowers. The study focuses on technique dependency on stroke rate. Five elite, five junior and five non-rowers participated, and the biomechanics of rowing on an ergometer was analyzed at stroke rates of 20, 26 and 34 str/min. The results show that elite rowers use a similar, consistent rowing technique at all stroke rates, the technique of junior rowers follows similar principles, while the technique of non-rowers varies. Elite rowers’ stroke length, handle motion and body posture do not change with stroke rate while the ratio of stroke phases, maximum forces, stroke work and joint loadings are constant at the same stroke rate but dependent on stroke rate. Junior rowers with stroke rate change also the stroke length. In non-rowers the differences can be observed in the handle motion and body posture during the stroke, their stroke length changes with stroke rate while the ratio of stroke phases stays constant. Although different movement execution is evident and variable with stroke rate, non-rowers demonstrate a consistent pattern at the same stroke rate. On the basis of the results, the crucial parameters that differentiate elite, junior, and non-rowers are identified.     

‘My Father's House has Many Mansions’: Ethnic Minorities in the Russian Orthodox Church

Abstract

This article describes the national mission of Russian Orthodox Church (ROC), the policy of the Moscow Patriarchate towards non-Russian Orthodox. The authors analyse the ROC as a multinational church that includes Finno-Ugrians (Karelians, Komi, Udmurts, Mari, Mordovians), Ukrainians, Belarusians, Chuvash, Yakuts, Ossetians, Kryashens, a significant number of Armenians, Jews, Tatars, Buryats and others. There are already millions of non-Russian Orthodox within the church who want to express their national identity in Orthodoxy. Meanwhile the social mood in Russia today is such that people quite frequently move from one faith to another. Russians become Muslims and Buddhists, and Tatars, Bashkirs, Kabards, Azeris, Buryats become Orthodox. Ethnic multiplicity in the ROC is growing, and this increases the ‘cosmopolitan’ potential of the church. The current authoritarian/bureaucratic system of government in the ROC means however that the ethnic question remains latent. At the same time national movements in the national regions of Russia have strongly criticised the ROC for ignoring the national interests of Orthodox native people. It is not really surprising that national movements and organisations are virtually never orientated towards Orthodoxy. Even among the most ‘Orthodox’ peoples, such as the Chuvash, Komi and Mordovians, with many practising Orthodox and a significant number of Orthodox priests, and among whom there is no other living religious tradition, the national movements are distant from the ROC, and indeed often hostile to it. Since the ROC has a Russian nationalist world view, Chuvash or Ossetian or Karelian Orthodoxy, each with its own original culture, will develop outside official church structures. From time to time Orthodox priests of local ethnic origin take initiatives to develop missionary work among the local people, but no such initiative has yet gained the support of the local hierarchy.