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- 저자 : John DiGiovanni (검색결과 2 건)
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Auditory Stroop Using Spatial Stimuli
Jeffrey J. DiGiovanni,Travis L. Riffle,John W. McCarthy 한국언어재활사협회 2017 Clinical Archives of Communication Disorders Vol.2 No.2
Purpose: The purpose of this study is to evaluate the influence of spatial auditory stimuli when the semantic meaning of the spoken word is incongruent with the location of the sound. Based on previous auditory Stroop research we predict that individuals will respond to incongruent stimuli with reduced accuracy and prolonged reaction times. Methods: Twenty students between the ages of 18–30 were presented with a word indicating a direction that included location cues representing the same or different direction. Stimuli were presented in the horizontal plane (i.e., left, center, right) and in the vertical plane (i.e., up, center, down). Participants were instructed to answer verbally the direction of the sound source rather than the direction the spoken word indicated. Accuracy and reaction times were analyzed in both planes. Results: Generally, for stimuli in the horizontal plane, accuracy was high and reaction times were low, regardless of congruency. However, there was a significantly higher frequency of errors in vertical-congruent conditions than in horizontal conditions. The frequency of vertical-incongruent errors was higher still. The pattern of reaction time results matched the accuracy results. Conclusions: Despite the simulated source angle being well above the minimal audible angle in both planes, the results suggest a lower salience in the vertical domain. If seeking to develop a multi-dimensional auditory map for sound selection, the horizontal plane is most likely to result in the clearest representations of sound-source location.
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Elizabeth Rourke,Abhijit Sunnapwar,Daniel Mais,Vishal Kukkar,John DiGiovanni,Dharam Kaushik,Michael A. Liss 대한비뇨의학회 2019 Investigative and Clinical Urology Vol.60 No.5
Purpose: To investigate if inflammation as a potential cause of false-positive lesions from recent UroNav magnetic resonance imaging (MRI) fusion prostate biopsy patients. Materials and Methods: We retrospectively identified 43 men with 61 MRI lesions noted on prostate MRI before MRI ultrasound-guided fusion prostate biopsy. Men underwent MRI with 3T Siemens TIM Trio MRI system (Siemens AG, Germany), and lesions were identified and marked in DynaCAD system (Invivo Corporation, USA) with subsequent biopsy with MRI fusion with UroNav. We obtained targeted and standard 12-core needle biopsies. We retrospectively reviewed pathology reports for inflammation. Results: We noted a total of 43 (70.5%) false-positive lesions with 28 having no cancer on any cores, and 15 lesions with cancer noted on systematic biopsy but not in the target region. Of the men with cancer, 6 of the false positive lesions had inflammation in the location of the targeted region of interest (40.0%, 6/15). However, when we examine the 21/28 lesions with an identified lesion on MRI with no cancer in all cores, 54.5% had inflammation on prostate biopsy pathology (12/22, p=0.024). We noted the highest proportion of inflammation. Conclusions: Inflammation can confound the interpretation of MRI by mimicking prostate cancer. We suggested focused efforts to differentiate inflammation and cancer on prostate MRI.
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