An unobtrusive measurement method of the horizontal gaze angle

A horizontal gaze angle measurement device is introduced. By combining a photoelectric viewing device to measure the horizontal eye angle with a similar head angle measurement device, it is possible to measure the horizontal gaze angle without using a headrest. After discussion of circuit diagrams and measurement principles, it is shown that the measurements made with the device yield a reasonable precision. The mean absolute measurement error is below 1°. This inexpensive and unobtrusive device covers a visual field of about 20° and can be used in parallel with many tasks. Further, data on the successful application of the device in a driving simulation setting are discussed.     

Positive Psychology: What Impact has it had on Sex Research Publication Trends?

Throughout history, Americans have been bitterly divided as to whether passionate love and sexual desire are positive experiences (that give meaning to life), whether they constitute a political, social, and spiritual danger, or whether sex in itself is not inherently bad, but certain sexual behaviors are wrong or dangerous. As previously noted by H. L. Horowitz, R. L. Rapson, and L. Stone, political and religious authorities—preaching the virtues of social control, chastity, and circumspection—have prevailed over reformers advocating “free love,” gender equality, birth control, the elimination of the double standard, sex education, and the like. In this paper we ask: Do we see any bias in the publication of modern-day sexuality research—specifically, do published studies tend to focus primarily on the positive or the negative aspects of sexuality? We attempted to answer this question by conducting a content analysis of articles appearing in four prestigious journals: The Journal of Sex Research, Archives of Sexual Behavior, The New England Journal of Medicine, and Obstetrics and Gynecology, from 1960 to the present. As expected, only a slim minority of articles investigated the delights of love, sex, and intimacy; the vast majority focused on the problems associated with sexual behavior. The positive psychology movement does not appear to have altered this time-tested bias.     

Theory of Mind and the Video Deficit Effect: Video Presentation Impairs Children’s Encoding and Understanding of False Belief

The video deficit effect (VDE) has been demonstrated in several studies on word learning, self-recognition, and imitation: Younger children (up to 3 years old) solved tasks more easily in a direct interaction with an examiner than when instructed by video (Anderson & Pempek, 2005). Older children might also be susceptible to a VDE, especially with more complex tasks; however, evidence is sparse. Furthermore, to what extent preschoolers’ understanding of others’ mental states (theory of mind) is impaired by video presentations has not been tested. We tested 174 children of 4 and 5 years of age in a traditional change of location task for false belief understanding (cf. Baron-Cohen, Leslie, & Frith, 1985). Children were presented with the original story, enacted by adult actors, in either a video or a live demonstration. Children watched the events in 2 live conditions, either through a 1-way mirror or directly. Our results indicate a significant VDE for 4- and 5-year-old children regarding the encoding and solution of the false belief task, respectively.     

Therapy for couples after an affair: A randomized-controlled trial

To examine the efficacy of a couples treatment approach for promoting recovery from a recently disclosed affair, 89 couples that disclosed an affair by one of the partners in the past 6 months were randomly assigned to treatment (n = 46) or to a control group that waited about 3 months for treatment (n = 43). The couples completed self-report measures (Beck Depression Inventory, Impact of Event Scale-Revised, Partnership Questionnaire) at pre- and post-treatment. Since about half of the couples dropped out for various reasons (e.g., ongoing affair, separation), we used multiple imputations to handle the missing data problem. We analyzed the dyadic data with hierarchical linear modeling in a two-level model. Significant improvements on scores of anxiety corresponded with large effect sizes for both partners. Yet significant improvements on depression scores were only found for the unfaithful partner with moderate effect size. Results suggest that the treatment can improve individual complaints, but not relationship satisfaction in a sufficient amount for both partners. Hence, future research should address how this intervention could encourage couples to maintain therapy, and how they might achieve more and sustained improvement in relationship satisfaction.     

临床活体部分小肠移植过程中矛盾现象及处理

从1999年至今、在国内我们率先成功地施行两例临床活体部分小肠移植术,在整个处置过程中出现许多的矛盾现象。如术前为纠正患者严重的营养不良,必须给予肠外营养支持。但是,长期的肠外营养又引起患者肝功能损害,使患者无法耐受手术;对受体来讲,当然是移植的肠管越长越有利,但是在活体移植的情况下供体只能有限地提供肠管,且肠管过长受体也无法接受;手术后患者必须应用有效的免疫抑制剂来防治免疫排斥反应,而机体在免疫抑制下极易发生感染,应用强效而广的抗菌素虽然可防治细菌的感染,但是可引起菌群的失调导致真菌感染;为防止血管内血栓的形成,需应用有效的抗凝剂,但同时可导致出血倾向等等。我们体会：正确地处理这些矛盾现象是我们成功的关键。首先要抓重点,抓主要矛盾,同时应对可能出现的问题有所感知并给与预防,尽可能避免副反应的发生。     

Predictive and postdictive mechanisms jointly contribute to visual awareness

One of the fundamental issues in visual awareness is how we are able to perceive the scene in front of our eyes on time despite the delay in processing visual information. The prediction theory postulates that our visual system predicts the future to compensate for such delays. On the other hand, the postdiction theory postulates that our visual awareness is inevitably a delayed product. In the present study we used flash-lag paradigms in motion and color domains and examined how the perception of visual information at the time of flash is influenced by prior and subsequent visual events. We found that both types of event additively influence the perception of the present visual image, suggesting that our visual awareness results from joint contribution of predictive and postdictive mechanisms.     

Biochemical pathogenesis of post-traumatic epilepsy

The online version of the original article can be found at     

Biochemical pathogenesis of post-traumatic epilepsy

Head trauma is often followed by epilepsy and may be related to the breakdown of red blood cells and hemoglobin within the CNS. Injection of hemoglobin or iron salts into the rat cortex is known to induce a chronic epileptic focus. We observed the formation of superoxide anion (O₂) and hydroxyl radical (·OH) after ferric chloride injection into the rat cerebral cortex and suggest that these radicals, especially ·OH, may be responsible for the initiation of lipid peroxidation in neuronal membranes and for the accelerated production of guanidine compounds in the brain, which may in turn lead to epileptogenicity. Then, we found that treatment with epigallocatechin (EGC) or a phosphate diester of vitamins E and C (EPC), which are potent ·OH scavengers, significantly inhibited the formation of malondialdehyde and epileptic discharges in the iron-induced epileptic focus. This study was supported by a grant-in-aid for scientific research from the Japanese Ministry of Education, Science, and Culture.