The Contribution of Neuroimaging to the Study of Language and Aphasia

New structural and functional imaging methods continue to be developed at a rapid pace. In the last 25 years, advanced imaging techniques have provided insights into how language is represented and processed in the brain and how it can be disrupted by damage to, or dysfunction of, various parts of the brain. Imaging studies have also yielded new information regarding how individuals recover language after stroke. We briefly review the strengths and weaknesses of the various radiological methods currently used to study language and aphasia.     

乳腺癌术式的演变及其最佳选择

乳腺癌作为女性常见的恶性肿瘤之一,一直是肿瘤学界研究的热点和焦点。手术作为其基本的治疗手段,术式几经改变。通过对乳腺癌术式演变的历史回顾,认为正是由于对乳腺癌生物学行为研究的不断深入,使得乳腺癌手术切除范围更趋于规范和科学。而由生物医学模式向生物—心理—社会医学模式的转变,以及循证医学(EBM)研究的开展,更促进了乳腺癌术式的不断改进,以最大程度减少并发症,获得更为满意的疗效。     

Simultaneous electronic recording of video and digital information on the video channel of a VTR or VCR

A technique is described that permits precise synchronization of video recorded behavior with discrete stimuli and responses. These discrete events are recorded as digital data on the video channel of a video recorder on a horizontal line that lies above the visible video information. These data may be observed in single-frame playback mode by underscanning the playback monitor. A circuit is described for computerized decoding of the digital data. Because each video field is uniquely coded, an updating of the data is possible 60 times each second. The described technique has several advantages over current approaches for synchronizing discrete stimulus and response events with video recorded behavior.     

What is Apple-Psych?

Apple Psych, a system of software subroutines written in Apple Pascal and 6502 assembly language, was designed to run real-time psychological experiments on the Apple II, II+, and IIe microcomputers. This paper describes the minimum system requirements necessary to run Apple-Psych, the capabilities of the basic system, and the advantages and disadvantages of using Apple-Psych. Because the utility of a system to a researcher is often linked to its flexibility and expandability, this paper includes a brief discussion of hardware expansions already supported by the Apple Psych software and hardware expansions that would require additional software support.     

Oculomanual Coordination in Tracking of Pseudorandom Target Motion Stimuli

Oculomanual coordination was investigated in 9 healthy subjects during tracking of pseudorandom motion stimuli. Each subject was required to track visual stimuli under eye-hand (EH) and eye-alone (EA) conditions. Subjects were exposed to 3 types of mixed sinusoidal stimulus with varying frequency or amplitude of the highest frequency component, or various degrees of irregularity. Progressive degradation in tracking performance was nonlinearly induced by an increase in either (a) the highest frequency component or (b) its amplitude, but not by stimulus irregularity. No significant difference was found in eye velocity gain and phase under the EH and EA conditions. Eye and hand responses were found to be highly correlated in gain and phase when compared across frequencies and motion stimuli. The results suggest that frequency and amplitude are dominant factors controlling the breakdown of oculomanual performance in response to pseudorandom stimuli. Frequency responses of smooth pursuit eye movements are not affected by the hand motion in pursuit of unpredictable stimuli. Eye and hand motor systems appear to share common nonlinear drive mechanisms when pursuing pseudorandom target motion stimuli.     

HBV携带者心理健康状况研究现状

乙肝病毒感染在我国已超过了10%,达1.4亿人左右,面对如此庞大的感染人群,如何合理而适当地处理乙肝病毒携带病例已不仅仅是医学问题,而且是重要的社会问题.随着心理学的快速发展,乙肝病毒携带者的心理问题已经受到了人们的普遍重视.目前众多学者认为乙肝病毒携带者心理问题严重,以焦虑、抑郁、强迫等为主,但是相关的支持治疗明显不足,有待于深入研究.     

学习效能感、自我决定动机对学业期望的作用:基于统合模型的分析

研究整群抽样山东某高中高二学生500人,通过统合模型分析自我决定动机在学习效能感预测学业期望中的作用.结果表明,学习效能感—自我决定动机—学业期望的模型与数据拟合良好,学生的学习效能感可以通过自我决定动机,正向预测其学业期望,自我决定动机在学习效能感和学业期望中起中介作用,非自我决定动机不能预测学业期望.说明学习效能感...     

大学生人际信任与主观幸福感的关系:亲社会行为与攻击行为的中介作用

为考察大学生的人际信任对主观幸福感的影响机制以及亲社会行为和攻击行为的中介作用,采用人际信任问卷、亲社会行为问卷、攻击行为问卷、幸福感指数问卷对2256名大学生进行调查。研究结果显示:(1)人际信任正向预测大学生的主观幸福感,人际信任水平越高,主观幸福感越好;(2)人际信任通过亲社会行为与攻击行为的中介作用,间接影响主观幸福感。