Direct electrical stimulation of the human cortex can produce subjective visual sensations, yet these sensations are unstable. The underlying mechanisms may stem from differences in electrophysiological activity within the distributed network outside the stimulated site. To address this problem, we recruited 69 patients who experienced visual sensations during invasive electrical stimulation while intracranial electroencephalography (iEEG) data were recorded. We found significantly flattened power spectral slopes in distributed regions involving different brain networks and decreased integrated information during elicited visual sensations compared with the non-sensation condition. Further analysis based on minimum information partitions revealed that the reconfigured network interactions primarily involved the inferior frontal cortex, posterior superior temporal sulcus, and temporoparietal junction. The flattened power spectral slope in the inferior frontal gyrus was also correlated with integrated information. Taken together, this study indicates that the altered electrophysiological signatures provide insights into the neural mechanisms underlying subjective visual sensations.
Humans ; Male ; Female ; Adult ; Visual Perception/physiology* ; Electric Stimulation ; Middle Aged ; Young Adult ; Electrocorticography ; Electroencephalography ; Brain Mapping

Background: Little is known about the views of faculty members who train medical students concerning open disclosure. Objectives: The objectives of this study were to determine the views of faculty in a medical school on: 1 what constitutes a medical error and the severity of such an error in relation to medication use or diagnosis; 2 information giving following such an adverse event, based on severity; and 3 acknowledgement of responsibility, remedial action, compensation, disciplinary action, legal action, and reporting to a higher body in relation to such adverse event. Methods: We adapted and contextualized a questionnaire developed from a previous study. The questionnaire had 4 case vignettes that described 1 clear medication error with lifelong disability; 2 possible diagnostic error with lifelong disability; 3 possible diagnostic error without harm; and 4 clear medication error without harm. We invited all faculty members attached to the medical school at the International Medical University to participate in the study. Results: Seventy faculty members took part. Faculty members viewed a medical error as having taken place depending on how clearly an error had occurred (94% and 73% versus 53% and 27%). They viewed cases as more severe based on the severity of complications (85% and 46% versus 5% and 10%). With increasing severity, they tended to attribute responsibility for the event and the duty to disclose towards more senior clinicians. They were also more agreeable with remedial action, compensation, disciplinary action, and reporting to a higher agency. There was no strong evidence of association between these areas and the demographics of faculty members. Conclusions: Faculty members are more likely to perceive an error had occurred depending on the clarity of the circumstances. They viewed severity based on the presence of complications. Severity determined how they attributed responsibility, duty to disclose, and other areas related to open disclosure.

PURPOSE: A recent phase III study (PARAMOUNT) demonstrated that pemetrexed continuation maintenance therapy is a new treatment paradigm for advanced nonsquamous non-small cell lung cancer (NSCLC). The majority of patients enrolled in PARAMOUNT were Caucasian (94%). We reviewed efficacy and safety data from two clinical trials, which enrolled East Asian (EA) patients, to supplement data from PARAMOUNT on pemetrexed continuation maintenance therapy in patients with nonsquamous NSCLC. MATERIALS AND METHODS: Study S110 was a phase II, multicenter, randomized, controlled, open-label trial in never-smoker, chemonaive, EA patients (n=31) with locally advanced or metastatic nonsquamous NSCLC (n=27). Study JMII was a multicenter, open-label, single-arm, post-marketing, clinical trial in Japanese patients (n=109) with advanced nonsquamous NSCLC. PARAMOUNT was a multicenter, randomized, double-blind, placebo-controlled trial in patients with advanced nonsquamous NSCLC. RESULTS: In EA patients with nonsquamous NSCLC, the median progression-free survival (PFS) for pemetrexed continuation maintenance therapy was 4.04 months (95% confidence interval [CI], 3.22 to 5.29 months) in study S110 and 3.9 months (95% CI, 3.2 to 5.2 months) in study JMII. The median PFS for pemetrexed continuation maintenance therapy in PARAMOUNT was 4.1 months (95% CI, 3.2 to 4.6 months). Pemetrexed continuation maintenance therapy in EA patients in studies S110 and JMII did not lead to any unexpected safety events, and was consistent with PARAMOUNT's safety profile. CONCLUSION: The efficacy and safety data in the EA trials were similar to those in PARAMOUNT despite differences in patient populations and study designs. These data represent consistent evidence for pemetrexed continuation maintenance therapy in EA patients with advanced nonsquamous NSCLC.
Asian Continental Ancestry Group* ; Carcinoma, Non-Small-Cell Lung* ; Disease-Free Survival ; Far East ; Humans ; Maintenance Chemotherapy

OBJECTIVE: This study aims to investigate association between early recognizable minor physical abnormality (MPA) during childhood is associated with mental health problems in young adults. METHODS: In 1984, 169 preschool children in central Taiwan underwent a detailed physical examination for subtle abnormalities (MPA). Fourteen years later, the Brief Symptom Rating Scale (BSRS) and Chinese Health Questionnaire (CHQ) were used to measure specific psychiatric symptoms. RESULTS: There is an association between MPA during childhood and adult characterized with interpersonal sensitivity, anxiety, depression and paranoid mental health symptoms. CONCLUSION: The signs of childhood MPA can be easily identified and should be regarded as risk factors when predicting mental disorder. Mental health professionals should consider MPAs as important signs for possible development of emotional problems.
Adult ; Anxiety ; Asian Continental Ancestry Group ; Child, Preschool ; Depression ; Humans ; Mental Disorders ; Mental Health ; Physical Examination ; Pilot Projects* ; Surveys and Questionnaires ; Risk Factors ; Taiwan ; Young Adult

OBJECTIVE: This study aims to investigate association between early recognizable minor physical abnormality (MPA) during childhood is associated with mental health problems in young adults. METHODS: In 1984, 169 preschool children in central Taiwan underwent a detailed physical examination for subtle abnormalities (MPA). Fourteen years later, the Brief Symptom Rating Scale (BSRS) and Chinese Health Questionnaire (CHQ) were used to measure specific psychiatric symptoms. RESULTS: There is an association between MPA during childhood and adult characterized with interpersonal sensitivity, anxiety, depression and paranoid mental health symptoms. CONCLUSION: The signs of childhood MPA can be easily identified and should be regarded as risk factors when predicting mental disorder. Mental health professionals should consider MPAs as important signs for possible development of emotional problems.
Adult ; Anxiety ; Asian Continental Ancestry Group ; Child, Preschool ; Depression ; Humans ; Mental Disorders ; Mental Health ; Physical Examination ; Pilot Projects* ; Surveys and Questionnaires ; Risk Factors ; Taiwan ; Young Adult

Occipital lobes are not usually implicated in the current proposed pathways of pathological laughter. We present a case of occasional pathological laughter associated with pontine infarct. Brain SPECT revealed hypoperfusion of bilateral occipital lobes in addition to an underlying abnormal regulation of the cortico-pontine-cerebellar pathway. The cause of bilateral occipital hypoperfusion was thought to be due to vertebrobasilar stenosis in our patient. The co-existence of bilateral occipital lobe hypoperfusion in our patient suggest that occipital lobes may also be involved in the generation of pathological laughter.