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Biomedical subjects

J B Benson

Publications and source records attributed to J B Benson.

4 recordsLinked to original sources
PubMed1980

Mucosal invasion in campylobacter enteritis.

Campylobacter fetus subspecies jejuni has recently been recognized as a significant cause of enteritis in humans. The organism has been previously postulated to cause illness by direct invasion of the mucosa of the gastrointestinal tract, but this has not been documented. Reported is a case of Campylobacter enteritis in which mucosal ulceration and crypt sbscesses were seen on rectal biopsy, suggesting that the pathogenesis of Campylobacter fetus enteritis involves direct mucosal invasion.

Adolescent↗
PubMedDate not supplied

The development of infants' reaches for stationary and moving targets.

The organization of infants' reaching skill for stationary and moving targets was examined. While 58 term, healthy infants at 5.5, 8.5, and 11.5 months of age reached for and grasped a cloth-covered dowel, their reaches were videotaped for later slow-motion analysis. Analyses addressed infants' anticipatory adjustment of hand alignment, use of information from spinning and oscillating targets to update ongoing reaches, and ability to capture targets moving in depth. Infants at all ages made anticipatory adjustments of hand alignment, although the effectiveness of these adjustments improved with age. Regardless of age, infants also used dynamic information from spinning and oscillating targets to update ongoing reaches, but the way infants used this information was related to age. Developmental constancy characterized infants' reaches for approaching targets. By observing infants' reaches for stationary, spinning, and approaching targets, the study expands the range of conditions under which adaptive reaching skill has been examined and provides insight into the roles of anticipation and updating in the development of early manual skill.

Age Factors↗