APANICOLAOU (PAP) CERVICAL cytology screening has helped reduce cervical cancer rates dramatically since its implementation in the 1950s. Pap test reporting classifications have evolved and been refined, with the current standard being the Bethesda system. 1 The management of equivocal Pap test abnormalities remains a large and complex clinical and public health challenge. The most common abnormal Pap test result is one of uncertainty, atypical squamous cells of undetermined significance (ASCUS). In the United States, about 2 million ASCUS Pap reports occur each year. A survey of Pap smear reporting rates in US cytology laboratories found a median of 2.9% ASCUS results, with 10% of laboratories reporting ASCUS rates of more than 9%. 2
The effects of stimulus order and novelty upon habituation and dishabituation of the GSR component of the OR were investigated. The numbers 21 to 60 were presented in serial order (Ordered-Novel group), and in random order (Random-Novel group), and the number 21 was repeated 40 times (Similar group). The number 600 was occasionally interpolated among each series. No group differences in magnitude of OR to the first stimulus or in habituation of the OR during the series of numbers were found. Dishabituation due to the interpolated stimulus was found primarily in the Similar group. The results were related to Sokolov's concept of neuronal models used in his theory of habituation.
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