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201.
Conde-Guzón PA Bartolomé-Albistegui MT Quirós P Cabestrero R 《The Spanish journal of psychology》2011,14(2):600-607
This paper examines the association of cardiovascular reactivity with thermal thresholds (detection and unpleasantness). Heart period (HP), systolic (SBP) and diastolic (DBP) blood pressure of 42 health young males were recorded during a cardiovascular reactivity task (a videogame based upon Sidman's avoidance paradigm). Thermal sensitivity, assessing detection and unpleasantness thresholds with radiant heat in the forearm was also estimated for participants. Participants with differential scores in the cardiovascular variables from base line to task > or = P65 were considered as reactors and those how have differential scores < or = P35 were considered as non-reactors. Significant differences were observed between groups in the unpleasantness thresholds in blood pressure (BP) but not in HP. Reactors exhibited significant higher unpleasantness thresholds than non-reactors. No significant differences were obtained in detection thresholds between groups. 相似文献
202.
Missa JN 《Journal international de bioéthique》2011,22(3-4):93-121, 196-7
The reason that gives doping in sport a deeper philosophical and ethical dimension is the emergence of a new medical paradigm: enhancement medicine. The question of enhancing performance in sport has become part of a broader societal debate on human enhancement. The gradual blurriness of the boarders between therapeutic medicine and enhancement medicine constitutes the most spectacular and the most troublesome form of these modifications. In the contemporary biomedicine, the new medicines and technologies can be used not only to cure the patients but also to enhance human capacities. This evolution represents a paradigmatic change in the medical practice: it is not the mere restoration of health which is expected anymore, nor the promotion of health. What is required is the improvement of performance and the perfectibility of the human being, including in the field of sport. Competitive sport could become the main laboratory of enhancement medicine. The intersection of science and sport raises fundamental philosophical, ethical and policy issues that cannot be answered easily. The prohibition and the war on doping is not the only solution. 相似文献
203.
Luyten L Vansteenwegen D van Kuyck K Gabriëls L Nuttin B 《Cognitive, affective & behavioral neuroscience》2011,11(2):228-244
Animal models of psychiatric disorders are important translational tools for exploring new treatment options and gaining more
insight into the disease. Thus far, there is no systematically validated animal model for generalized anxiety disorder (GAD),
a severely impairing and difficult-to-treat disease. In this review, we propose contextual conditioning (CC) as an animal
model for GAD. We argue that this model has sufficient face validity (there are several symptom similarities), predictive
validity (it responds to clinically effective treatments), and construct validity (the underlying mechanisms are comparable).
Although the refinement and validation of an animal model is a never-ending process, we want to give a concise overview of
the currently available evidence. We suggest that the CC model might be a valuable preclinical tool to enhance the development
of new treatment strategies and our understanding of GAD. 相似文献
204.
Wallet G Sauzéon H Pala PA Larrue F Zheng X N'Kaoua B 《Cyberpsychology, behavior and social networking》2011,14(7-8):417-423
The purpose of this study was to evaluate the effect the visual fidelity of a virtual environment (VE) (undetailed vs. detailed) has on the transfer of spatial knowledge based on the navigation mode (passive vs. active) for three different spatial recall tasks (wayfinding, sketch mapping, and picture sorting). Sixty-four subjects (32 men and 32 women) participated in the experiment. Spatial learning was evaluated by these three tasks in the context of the Bordeaux district. In the wayfinding task, the results indicated that the detailed VE helped subjects to transfer their spatial knowledge from the VE to the real world, irrespective of the navigation mode. In the sketch-mapping task, the detailed VE increased performances compared to the undetailed VE condition, and allowed subjects to benefit from the active navigation. In the sorting task, performances were better in the detailed VE; however, in the undetailed version of the VE, active learning either did not help the subjects or it even deteriorated their performances. These results are discussed in terms of appropriate perceptive-motor and/or spatial representations for each spatial recall task. 相似文献
205.
Mickaël Laisney Laetitia Bon Catherine Guiziou Nathalie Daluzeau Francis Eustache Béatrice Desgranges 《Journal of Neuropsychology》2013,7(1):107-120
Theory of Mind (ToM) allows one's own and others' cognitive and emotional mental states to be inferred. Although many patients with Alzheimer's disease (AD) display impaired social functioning as their disease progresses, very few studies have investigated ToM in AD. Those that have done so suggest that patients' ToM deficits are the consequence of other cognitive impairments. The aim of this study was thus to investigate changes in both the cognitive and the affective dimensions of ToM in AD, using tasks designed to circumvent the patients' comprehension difficulties. Sixteen mild to moderate AD patients and 15 healthy controls matched on age, sex and education level underwent cognitive (preference judgment and first‐ and second‐order false belief) and affective (Reading the Mind in the Eyes) ToM assessments. Comprehension of false belief stories was verified and an additional neuropsychological examination was undergone. We observed impaired performances by AD patients on all the ToM tasks. While working memory and executive functioning impairments contributed to the deterioration in the more complex aspects of cognitive ToM abilities as highlighted by a correlation analysis, we failed to observe any comprehension difficulties in patients who performed poorly on simple cognitive ToM tasks, which suggests that AD truly affects cognitive ToM. 相似文献
206.
In this experiment we test whether the effects of manual asymmetries on movement preparation depend on the parameter (amplitude or direction) to be programmed. In two experiments, only the amplitude, or the direction, of aiming movements was constrained. Reaction and movement times were measured. Results show that RTs are always shorter for left-hand than for right-hand movements. There is an effect of target extent in the amplitude condition, but not in the direction one. RTs for ipsilateral movements are shorter than RTs for contralateral movements. These results are discussed in the light of the processes involved in setting the amplitude or direction of the movement and with regard to the competency of the two hemispheres regarding these processes. 相似文献
207.
Despite advances in therapies, there remain psychiatric patients who are extremely ill and cannot be helped by classic psychiatric treatments, including psychotherapy and drug therapy. Certain of these patients may be helped by use of bilateral brain lesioning. The complication rate of standard stereotactic psychosurgery techniques is very low. The main rationale for the continued experimental use of deep brain stimulation (DBS) in neurosurgery for mental disorders is its reversibility. This reversibility is not an advantage in terms of the benefits obtained, but rather if side effects emerge. In addition, electrical stimulation may provide patients with some autonomy for their treatment. The first, very preliminary results of electrical stimulation for obsessive-compulsive disorder and for a small heterogeneous group of patients with other psychiatric disorders have been published. Electrical stimulation of the brain for psychiatric disorders may become a new treatment option for certain intractable psychiatric disorders. Nevertheless, the mechanism of action of DBS in psychiatric disorders is unknown, and the experience with this modality is extremely limited. The first results look promising, but this treatment option may prove unusable for some time because of a lack of knowledge of appropriate brain stimulation targets and technical problems such as the availability of sufficient current supply. 相似文献
208.
van den Brink D Brown CM Hagoort P 《Journal of experimental psychology. Learning, memory, and cognition》2006,32(2):364-372
An event-related brain potential experiment was carried out to investigate the temporal relationship between lexical selection and the semantic integration in auditory sentence processing. Participants were presented with spoken sentences that ended with a word that was either semantically congruent or anomalous. Information about the moment in which a sentence-final word could uniquely be identified, its isolation point (IP), was compared with the onset of the elicited N400 congruity effect, reflecting semantic integration processing. The results revealed that the onset of the N400 effect occurred prior to the IP of the sentence-final words. Moreover, the factor early or late IP did not affect the onset of the N400. These findings indicate that lexical selection and semantic integration are cascading processes, in that semantic integration processing can start before the acoustic information allows the selection of a unique candidate and seems to be attempted in parallel for multiple candidates that are still compatible with the bottom-up acoustic input. 相似文献
209.
Hagedoorn M Van Yperen NW Coyne JC van Jaarsveld CH Ranchor AV van Sonderen E Sanderman R 《Psychology and aging》2006,21(3):611-620
The association between marital status and distress was examined in a largely neglected group, namely older people (65 and older; N = 1,649). In this 2-wave study, married persons were less distressed than single persons, but perceived equity within the marriage and recency of bereavement qualified these findings. Married persons who felt inequitably treated were more distressed than persons who had always been single. Married persons reported less distress than recently (= 2 years ago) widowed persons, but only equitably treated married persons reported less distress than persons widowed for more than 2 years. Increased distress between the 2 waves occurred in recently widowed persons, and there was a decrease in distress in persons who were widowed shortly before the 1st wave. No gender effects were found. 相似文献
210.
Tscope is a C/C11 programming library designed for programming experiments that run on Windows 2000/XP. It is intended for
a public of experimental psychologists with moderate programming skills, who are accustomed to writing their own experimental
programs for DOS but have not made the step to Windows-based programming yet. It provides molecular functions for graphics,
sound, timing, randomization, and response registration. Together with ANSI-C standard library functions and the powerful
C syntax, this set of functions gives the experimenter the opportunity to program virtually any experiment one can come up
with. Tscope is completely based on free software, is distributed under the GNU General Public License, and is available at
expsy.ugent.be/tscope. An integrated development environment for compiling and running Tscope programs is also freely available. 相似文献