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Biomedical subjects

C A Reeves

Publications and source records attributed to C A Reeves.

4 recordsLinked to original sources
PubMed2000

Comparison of vaginal shapes in Afro-American, caucasian and hispanic women as seen with vinyl polysiloxane casting.

Full vinyl polysiloxane casts of the vagina were obtained from 23 Afro-American, 39 Caucasian and 15 Hispanic women in lying, sitting and standing positions. A new shape, the pumpkin seed, was found in 40% of Afro-American women, but not in Caucasians or Hispanics. Analyses of cast and introital measurements revealed: (1) posterior cast length is significantly longer, anterior cast length is significantly shorter and cast width is significantly larger in Hispanics than in the other two groups and (2) the Caucasian introitus is significantly greater than that of the Afro-American subject.

Black People↗
PubMed1997

Visual accommodation and virtual images: do attentional factors mediate the interacting effects of perceived distance, mental workload, and stimulus presentation modality?

A study was conducted to examine the effect on the visual accommodation response of processing information presented either visually or aurally while viewing a real-world scene. A number of different conditions were tested in which a mental processing task, a virtual image overlaying the real world (as is the case with head-up displays), or both were present. These manipulations provided two factors that have previously been demonstrated to have some influence on the accommodation response: mental effort and perceived distance. They also allowed the investigation of the influence of the source modality of the information to be processed. The results suggested that these influences may have a cumulative effect on the visual accommodation response, possibly mediated by attentional factors.

Accommodation, Ocular↗
PubMed1996

The shape and dimensions of the human vagina as seen in three-dimensional vinyl polysiloxane casts.

Full vaginal casts of 39 caucasian women, 13 each nulliparous, uniparous and multiparous, were made using vinyl polysiloxane impression material. Vaginal lengths were measured with polished acrylic rods inserted by the subjects, and introital diameters were measured with conical polypropylene flasks. Parallel sided, conical, heart, and slug shapes were found. Lengths ranged from 6.86 to 14.81 cm; widths ranged from 4.8 to 6.3 cm; introital diameters ranged from 2.39 to 6.45 cm. No significant differences by parity or shape were found.

Female↗