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41.
This paper overviews recent developments in an ongoing program of brain imaging research on developmental stuttering that is being conducted at the University of Texas Health Science Center, San Antonio. This program has primarily used H215O PET imaging of different speaking tasks by right-handed adult male and female persistent stutterers, recovered stutterers and controls in order to isolate the neural regions that are functionally associated with stuttered speech. The principal findings have emerged from studies using condition contrasts and performance correlation techniques. The emerging findings from these studies are reviewed and referenced to a neural model of normal speech production recently proposed by Jürgens [Neurosci. Biobehav. Rev. 26 (2002) 235]. This paper will report (1) the reconfiguration of previous findings within the Jürgens Model; (2) preliminary findings of an investigation with late recovered stutterers; (3) an investigation of neural activations during a treatment procedure designed to produce a sustained improvement in fluency; and (4) an across-studies comparison that seeks to isolate neural regions within the Jürgens Model that are consistently associated with stuttering. Two regions appear to meet this criterion: right anterior insula (activated) and anterior middle and superior temporal gyri (deactivated) mainly in right hemisphere. The implications of these findings and the direction of future imaging investigations are discussed.
Educational objectives: The reader will learn about (1) recent uses of H215O PET imaging in stuttering research; (2) the use of a new neurological model of speech production in imaging research on stuttering; and (3) initial findings from PET imaging investigations of treated and recovered stutterers. 相似文献
42.
Mary Finn Maples Newsom Battle Maples 《Journal of counseling and development : JCD》1999,77(3):369-373
The authors have had the honor of knowing Gilbert and Kathleen Wrenn for 20 years; this story is about them. As Gilbert stated, “I am not a lone star, but part of a constellation… ”(Wachowiak & Aubrey, 1976, p. 76). The authors are privileged to know that for Gilbert, Kathleen (his partner of 72 years in 1996) is the center of that constellation. This article briefly captures pieces of the journey of 72+ years, on which Gilbert and Kathleen, each at 96 years of age, are continuing to travel together. 相似文献
43.
The toll exacted by occupational injuries and illnesses on employed people involves a degree of personal and family suffering of such magnitude that clergy can legitimately consider it a part of their pastoral responsibilities to address the problem. Several cogent reasons for clergy involvement in occupational safety and health are provided, along with approaches clergy can implement to help parishioners reduce their workplace risks. Resources for assistance in engaging in these activities are suggested.This article represents an expansion of a paper that appeared originally inCurrents in Theology and Mission, Fall 1979. 相似文献
44.
In a 2 by 4 design, leadership style (authoritarian versus democratic) was varied against form of address (Mr., Ms., Miss, Mrs.) in a simulated small group case study. Subjects (374 college and high school students) read the case study and then rated their reactions to the leaderson behavioral differential factors of "subordination" and "friendship." These ratings indicate significant effects due to leader style (i.e., greater subordination and stronger friendship attraction to democratic rather than authoritarian leaders). Leader title produced no significantmain effects although authoritarian leaders using the title Ms. evoked higher subordination (p <.001) than other authoritarian leaders. 相似文献
45.
Previous work has shown an advantage of middle spatial frequencies (SFs) in face recognition. However, a few recent studies have suggested that this advantage is reduced when comparison and test stimuli are spatially filtered in a similar way. In the present study, we used standard psychophysical methods, in combination with a match-to-sample task, to determine the SF thresholds for face matching under conditions in which: (1) comparison stimuli were unfiltered and (2) comparison stimuli were spatially filtered in the same way as test stimuli. In two experiments, we show that SFs closer to the middle band are sought out more in the former case than in the latter. These results are compatible with the idea that a middle band of SFs will be most useful for any visual task and that the breadth of this optimal middle band will vary depending on task characteristics. 相似文献
46.
Green C Hummel JE 《Journal of experimental psychology. Human perception and performance》2006,32(5):1107-1119
Identification of objects in a scene may be influenced by functional relations among those objects. In this study, observers indicated whether a target object matched a label. Each target was presented with a distractor object, and these were sometimes arranged to interact (as if being used together) and sometimes not to interact. When the distractor was semantically related to the label, identification was more accurate for targets arranged to interact with that distractor. This effect depended on observers' ability to perceptually integrate the stimulus objects, suggesting that it was perceptual in nature. The effect was not attributable to attentional cuing and did not depend on expectation of certain object pairs. These data suggest that familiar functional groupings of objects are perceptually grouped. 相似文献
47.
Peter R. Finn Alicia N. Justus Carlos Mazas Linda Rorick Joseph E. Steinmetz 《Integrative psychological & behavioral science》2001,36(2):154-167
This study investigated whether low levels of the personality trait of constraint and early-onset alcoholism would be associated
with deficits in aversive conditioning and smaller responses to novelty in a stimulus mismatch protocol. Personality traits
(constraint and socialization) and skin conductance responses (SCRs) during conditioning and novelty paradigms were assessed
in alcoholics (n=41) and non-alcoholics (n=32). The conditioning protocol involved measuring SCRs after conditioned stimuli
(CS+: tones) paired with shock, CS− tones unpaired with shock, and CS+ probes unpaired with shock. The mismatch protocol involved
measuring SCRs to auditory stimuli consisting of a series of 5 pure tones of the same pitch followed a shorter white noise
stimulus (the novel stimulus). Contrary to the hypothesis, alcoholics did not differ from non-alcoholics in SCRs to CS+ probes
or on the mismatch measure (SCR novel tone—SCR to 5th tone). Higher levels of constraint and self-reports of fear during conditioning were associated with smaller responses to
both the CS+ probes and the CS− tones as well as the mismatch measure within non-alcoholics, but not within alcoholics. In
alcoholics, low constraint was associated with greater habituation to CS+ probes, and poor differential conditioning on measures
of change across trials in SCR to CS+ probes and CS− stimuli. The results suggest that different processes influence levels
of constraint in non-alcoholics and alcoholics. The data indicate that low constraint in non-alcoholics is associated with
allocating fewer processing resources to potentially significant stimuli, rather than being associated with a specific deficit
in aversive conditioning per se. 相似文献
48.
At an all-you-can eat buffet in a sports bar, it was tested whether people would eat less if they knew how much they had already eaten. 50 graduate students (34 women; M age = 24.1 yr.) were seated at 21 tables randomly assigned to be bussed (leftover wings removed) or unbussed (wings left on table). The 31 students at the bussed tables ate more than those at the unbussed tables (7 wings vs. 5.5 wings), with the effect being stronger for men than women. In distracting eating environments, environmental cues may provide an effective means of reducing consumption. Implications for controlling alcohol intake were also noted. 相似文献
49.
50.