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Three studies examined whether the specificity with which people retrieve episodes from their past determines the specificity with which they imagine the future. In the first study, suicidal patients and nondepressed controls generated autobiographical events and possible future events in response to cues. Suicidal subjects' memory and future responses were(More)
Fourteen symptomatic patients with severe extracranial internal carotid artery stenosis (> or = 70% of luminal narrowing) were monitored using long-term transcranial Doppler ultrasonography to determine the rate of clinically silent embolism of the ipsilateral middle cerebral artery. Before carotid endarterectomy (all patients being treated with intravenous(More)
Spontaneous activity and rhythmical oscillations are common features of large neuronal networks in mammals. Detection of repetitive spike patterns or pacemaker activity during electrophysiological recording of spontaneous action potentials from single neurons can be difficult if a "noisy" background is present. This paper describes an improved method for an(More)
We monitored breathing pattern and arterial oxygen saturation in 32 conscious patients with acute ischemic stroke. Seventeen (53%) had Cheyne-Stokes respiration with concomitant drops in oxygen saturation, unrelated to infarct location. The ventilatory disturbance promptly reversed after intravenous theophylline ethylenediamine or oxygen inhalation. The(More)
Subjective reactions of discomfort, impaired air quality, irritation of mucosal membranes, and impaired memory have been reported in chemically sensitive subjects during exposure to volatile organic compounds (VOCs) found in new buildings. Sixty-six normal healthy male subjects aged 18-39 were exposed for 2.75 hr to a complex VOC mixture at 0 and 25 mg/m3.(More)
AIMS We hypothesized that first-time submassive pulmonary embolism (PE) can cause persistent, significant cardiopulmonary problems, including right ventricular damage and worsened quality of life in patients with no prior cardiopulmonary disease. METHODS AND RESULTS We prospectively enrolled 205 patients without end-stage comorbidity diagnosed with(More)
1 Electric bikes (e-bikes) are increasingly common in China, but are relatively rare in the U.S. To 2 further understand the potential market for and use of e-bikes in the U.S., this paper presents 3 findings from interviews with 28 e-bike owners in the Portland, Oregon region. The interviews 4 revealed several possible demographic markets for e-bikes that(More)
Although ultrasound is a highly useful tool for clinical diagnosis, it has certain limitations in accurately quantifying internal carotid stenosis or diagnosing internal carotid occlusion. However, these limitations can be overcome by increasing the echogenicity of flowing arterial blood by use of echo-enhancement agents. Two phase III studies assessed the(More)