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Biomedical subjects

James J Clark

Publications and source records attributed to James J Clark.

2 recordsLinked to original sources

Microsaccades as an overt measure of covert attention shifts.

Microsaccades, or tiny eye movements that take place during periods of fixation, have long been thought to be random artifacts of the oculomotor system. Here we demonstrate a possible link between microsaccades and covert attention shifts. We designed two psychophysical tasks involving spatial cues that had identical sensory stimuli but differing patterns of attentional benefits and costs. We found that microsaccades, rather than being randomly distributed, had directions that were directly correlated with the directions of covert attention shifts in the two tasks. Our results suggest that microsaccades occur because of subliminal activation of the oculomotor system by covert attention.

Adolescent↗

Developing, implementing, and evaluating a treatment protocol for rural substance abusers.

Substance abuse is a significant social and public health problem facing rural Americans. However, most treatment protocols have been developed in urban areas. This article describes the development, implementation, and evaluation of an innovative substance abuse treatment designed with the collaboration of rural professionals and consumers specifically for rural clients and delivered by rural clinicians. Results of the process evaluation of Structured Behavioral Outpatient Rural Therapy (SBORT) produced findings about the experiences of participating clients, clinicians, and program directors. Most clients perceived SBORT as a helpful learning process that used multiple treatment strategies and presented an alternative to 12-step programs. Clients also reported that treatment was stressful even when beneficial, and that clinician support was critical for remaining in treatment. Most clinicians found that SBORT challenged their "old" treatment frameworks, was demanding to learn and adopt, and that the training and supervision involved in the project implementation helped remedy rural isolation from the treatment community. Interestingly, agency approach to program implementation strongly influenced clinician responses to the innovation. Agency program directors' appraisals of SBORT included observations that the therapy was viable because of its rural-specific design and that most staff were able to adapt to the changes demanded by the manualized protocol. All three groups reported that they saw the emphasis and acceptance of motivation as an emergent process as important to the treatment. This project highlighted the challenge and importance of testing rural substance abuse treatment protocols in naturalistic settings.

Behavior Therapy↗