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Drew T, Horowitz TS, Wolfe J, Vogel EK. Neural measures of interhemispheric information transfer during attentive tracking. J Vis 2010. [DOI: 10.1167/10.7.302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Cohen M, Howe P, Horowtiz T, Wolfe J. Support for a postdictive account of the flash-lag effect. J Vis 2010. [DOI: 10.1167/8.6.600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Kunar M, Flusberg S, Wolfe J. Why don't people use memory when repeatedly searching though an over-learned visual display? J Vis 2010. [DOI: 10.1167/8.6.311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Van Wert M, Nova N, Horowitz T, Wolfe J. What does performance on one visual search task tell you about performance on another? J Vis 2010. [DOI: 10.1167/8.6.312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Kuzmova Y, Wolfe J, Rich A, Brown A, Lindsey D, Reijnen E. PINK: the most colorful mystery in visual search. J Vis 2010. [DOI: 10.1167/8.6.382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Cohen M, Horowitz T, Wolfe J. Auditory recognition memory is inferior to visual recognition memory. J Vis 2010. [DOI: 10.1167/9.8.568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Horowitz T, Wolfe J, Keehn B, Connolly C, Joseph R. Is superior visual search in autism due to memory in search? J Vis 2010. [DOI: 10.1167/7.9.712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Wolfe J, Reijnen E, Ahmad H, VanWert M. Where would you look? Guiding visual search with global spatial information. J Vis 2010. [DOI: 10.1167/7.9.719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Van Wert M, Horowitz T, Wolfe J. Curing the prevalence effect in visual search. J Vis 2010. [DOI: 10.1167/7.9.709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Rich A, Kunar M, Van Wert M, Hidalgo-Sotelo B, Wolfe J. Do rare features pop out? Exploring the boundaries of the low prevalence effect. J Vis 2010. [DOI: 10.1167/7.9.708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Kunar M, Flusberg S, Wolfe J. Time to guide: Evidence for delayed attentional guidance in contextual cueing. J Vis 2010. [DOI: 10.1167/7.9.711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Horowitz T, Cohen M, Howe P, Wolfe J. Do multiple object tracking and letter identification use the same visual attention resource? J Vis 2010. [DOI: 10.1167/9.8.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Reijnen E, Pedersini R, Pinto Y, Horowitz T, Kuzmova Y, Wolfe J. Amodal completion does not require attention. J Vis 2010. [DOI: 10.1167/9.8.1174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Wolfe J, Kuzmova Y. Don't underestimate the Force: Learning to have a hunch in visual search. J Vis 2010. [DOI: 10.1167/9.8.1196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Drew T, Horowitz T, Wolfe J, Vogel EK. Neural measures of maintaining and updating object information. J Vis 2010. [DOI: 10.1167/9.8.172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Kunar M, Wolfe J. No target no effect: Target absent trials in contextual cueing. J Vis 2010. [DOI: 10.1167/9.8.1180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Pinto Y, Horowitz T, Wolfe J. Sometimes change blindness is just visual amnesia. J Vis 2010. [DOI: 10.1167/9.8.171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Pedersini R, Navalpakkam V, Horowitz T, Perona P, Wolfe J. Quitting rules in visual search. J Vis 2010. [DOI: 10.1167/9.8.1186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Howe P, Livingstone M, Morocz I, Horowitz T, Wolfe J. A Neurophysiological model of multiple object tracking derived from fMRI. J Vis 2010. [DOI: 10.1167/8.6.220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Horowitz T, Wolfe J, Cohen D, Czeisler C, Klerman E. Quantifying the effects of sleepiness on sustained visual attention. J Vis 2010. [DOI: 10.1167/8.6.233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Wolfe J, Alvarez G, Rosenholtz R, Oliva A, Torralba A, Kuzmova Y, Uhlenhuth M. Search for arbitrary objects in natural scenes is remarkably efficient. J Vis 2010. [DOI: 10.1167/8.6.1103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Hyle M, Vasan N, Butcher S, Wolfe J. How fast can you change your mind? Effects of target identity cues in visual search. J Vis 2010. [DOI: 10.1167/2.7.534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Mack JW, Wolfe J, Cook EF, Grier HE, Cleary PD, Weeks JC. Peace of mind and sense of purpose as core existential issues among parents of children with cancer. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.9518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Hechler T, Blankenburg M, Friedrichsdorf S, Garske D, Hübner B, Menke A, Wamsler C, Wolfe J, Zernikow B. Parents' Perspective on Symptoms, Quality of Life, Characteristics of Death and End-of-Life Decisions for Children Dying from Cancer. KLINISCHE PADIATRIE 2008; 220:166-74. [DOI: 10.1055/s-2008-1065347] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Wolfe J. What does airport baggage screening have to do with cervical cancer screening? Cytopathology 2007. [DOI: 10.1111/j.1365-2303.2007.00499_3.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Mack JW, Cook EF, Wolfe J, Grier HE, Cleary PD, Weeks JC. Hope and prognostic disclosure. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.6510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
6510 Background: Physicians sometimes selectively convey prognostic information to support patients’ hopes. However, the relationship between prognostic disclosure and hope is not known. Methods: We surveyed 194 parents of children with cancer (overall response rate 70%) in their first year of cancer treatment at the Dana-Farber Cancer Institute and Children’s Hospital, Boston, Mass, and the children’s physicians. We evaluated relationships between parents’ recall of prognostic disclosure by the physician and the extent to which physician communications “always” made them feel hopeful. A five-item index of prognostic disclosure assessed whether prognostic information was provided in any form, in quantitative terms, and in written form, whether the physician gave prognostic information before the parent asked, and whether parents wanted additional prognostic information beyond what they had already received. Results: Parents were less likely to report hopeful communication when the child’s likelihood of cure was low (OR .70 per category of decreasing likelihood of cure, P=.0003). However, parents who reported having received more extensive prognostic information were more likely to report hopeful communication, even when the prognosis was poor. In a multivariable model, parental report that physician communication “always” made them feel hopeful was associated with increased prognostic disclosure (OR 1.67 per element of disclosure, P=.009) and higher perceived communication quality (OR 5.39, P<.0001). In contrast, communication-related hope was inversely associated with the child’s likelihood of cure (OR .67, P=.006). Conclusions: Although physicians sometimes selectively convey prognostic information to preserve hope, we found no evidence that prognostic disclosure makes parents less hopeful. Instead, disclosure of prognosis by the physician can support hope for parents of children with cancer, even when the child’s prognosis is poor. No significant financial relationships to disclose. [Table: see text]
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Schulman JH, Mobley JP, Wolfe J, Regev E, Perron CY, Ananth R, Matei E, Glukhovsky A, Davis R. Battery powered BION FES network. CONFERENCE PROCEEDINGS : ... ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL CONFERENCE 2007; 2004:4283-6. [PMID: 17271251 DOI: 10.1109/iembs.2004.1404193] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The Alfred Mann Foundation is completing development of a coordinated network of BION microstimulator/sensor (hereinafter implant) that has broad stimulating, sensing and communication capabilities. The network consists of a master control unit (MCU) in communication with a group of BION implants. Each implant is powered by a custom lithium-ion rechargeable 10 mW-hr battery. The charging, discharging, safety, stimulating, sensing, and communication circuits are designed to be highly efficient to minimize energy use and maximize battery life and time between charges. The stimulator can be programmed to deliver pulses in any value in the following range: 5 microA to 20 mA in 3.3% constant current steps, 7 micros to 2000 micros in 7 micros pulse width steps, and 1 to 4000 Hz in frequency. The preamp voltage sensor covers the range 10 microV to 1.0 V with bandpass filtering and several forms of data analysis. The implant also contains sensors that can read out pressure, temperature, DC magnetic field, and distance (via a low frequency magnetic field) up to 20 cm between any two BION implants. The MCU contains a microprocessor, user interface, two-way communication system, and a rechargeable battery. The MCU can command and interrogate in excess of 800 BlON implants every 10 ms, i.e., 100 times a second.
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Srivastava G, Vine SJ, Asaad KAB, Wolfe J. Successful outcome after hepatic rupture in previous eclamptic pregnancy. Arch Gynecol Obstet 2006; 276:73-5. [PMID: 17177030 DOI: 10.1007/s00404-006-0294-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2006] [Accepted: 11/20/2006] [Indexed: 11/26/2022]
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Ho S, Spiegelberg T, Wolfe J, Richardson JK. PR_063. Arch Phys Med Rehabil 2006. [DOI: 10.1016/j.apmr.2006.08.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Abstract
ascular surgery is a challenging discipline and complex aneurysms can present an entire range of technical difficulties. To overcome these problems good technical skills are mandatory. However, it is also worth remembering a few basic rules: The simplest solution is often the best. All cases need careful planning, including that of the approach. A successful anastomosis requires good aortic tissue. Minimal dissection reduces morbidity.
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Mack JW, Cook EF, Wolfe J, Grier HE, Cleary PD, Weeks JC. Understanding of prognosis among parents of children with cancer: Parental optimism and the role of the parent-physician interaction. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.6033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
6033 Background: Patients often overestimate their chances of surviving cancer. Factors that contribute to accurate understanding of prognosis among parents of children with cancer are not known. Methods: We conducted a cross-sectional survey of 194 parents of children with cancer (overall response rate 70%), treated at the Dana-Farber Cancer Institute and Children’s Hospital, Boston, Mass, and the children’s physicians. Our main outcome measure was agreement between parent and physician ratings of the child’s likelihood of cure. Results: The majority of parents (61%) were more optimistic about the likelihood of their child’s cure than their child’s physician was. Most parents, however, believed that their opinions about prognosis either matched (70%) or were more pessimistic (26%) than those of their physicians. When physicians were confident in their knowledge of the child’s prognosis, parent and physician perceptions of prognosis were more likely to agree (OR 2.55, P = .004). Parents whose role in decision-making matched their ideal role were more likely to give prognostic estimates that agreed with physician perceptions of prognosis (OR 1.89, P = .019). In contrast, parent confidence in knowledge (OR .07, P < .0001), coping strategies (disengagement, OR .31, P = .007; reliance on emotional support from others, OR .31, P = .029), and use of intuition to understand prognosis (OR .51, P = .012), were associated with overestimation of likelihood of cure. Conclusions: Many parents overestimate their children’s chances of being cured of cancer. Neither physician nor parent attributes alone account for this finding; rather, successful communication about prognosis requires that physicians relate to parents’ individual communication and decision-making needs. No significant financial relationships to disclose.
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Ullrich CK, Hilden JM, Sheaffer JW, Moore CL, Berde CB, Weeks JC, Wolfe J. Factors associated with fatigue in children with cancer at the end of life. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.8574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
8574 Background: Fatigue is prevalent in children with cancer but is poorly understood. Improved understanding of this symptom will inform development of interventions aimed at alleviating it. Methods: Cross-sectional survey conducted between 1997–2001 of 144 parents of children who died of cancer cared for at Dana-Farber Cancer Institute/Children’s Hospital Boston and Children’s Hospital and Clinics, St Paul and Minneapolis (response rate 65%). Parents reported the child’s experience of symptoms in the last month of life and associated suffering, and patient characteristics. Determinants of suffering from, and treatment of fatigue were explored with univariate analyses adjusting for physician and time since death. A logistic regression model was built to determine factors associated with suffering from fatigue, with a threshold for entry of P<.05, and accounting for physician clustering. Results: Almost all children experienced fatigue and 50% suffered significantly from it (a great deal/a lot versus some/a little/none at all). Only 15% received treatment, and of them, 79% were not successfully treated. Univariate analyses revealed significant associations between suffering from fatigue and suffering from pain, dyspnea, anorexia, diarrhea, and nausea/vomiting, as well sadness, anemia and successful treatment of pain (P<.05). Treatment of fatigue was associated with side effects from treatment of pain (OR 3.9, P=.008) and treatment of dyspnea (OR 3.9, P=.02). In the multivariate analysis of suffering from fatigue, successful treatment of pain remained significant (OR 4.2, P=.009). Conclusions: Suffering from fatigue is common in children with cancer at the end of life and efforts to palliate it are limited. Significant fatigue is highly associated with other symptoms and their treatments. Increased attention to treatment-related fatigue and evaluation of interventions such as stimulants may be effective in ameliorating fatigue in children with advanced cancer. No significant financial relationships to disclose.
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Ball MC, Canny MJ, Huang CX, Egerton JJG, Wolfe J. Freeze/thaw-induced embolism depends on nadir temperature: the heterogeneous hydration hypothesis. PLANT, CELL & ENVIRONMENT 2006; 29:729-45. [PMID: 17087458 DOI: 10.1111/j.1365-3040.2005.01426.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Freeze/thaw-induced embolism was studied in leaves of field-grown snow gum (Eucalyptus pauciflora) subject to frequent morning frosts. Juvenile trees were grown in buried pots, brought to the laboratory at different stages of acclimation and subjected to simulated frost-freezes (at 2 degrees C h(-1)) to nadir temperatures of -3 or -6 degrees C, which snow gums commonly experience. Frost-frozen and subsequently thawed leaves were cryo-fixed to preserve the distribution of water and were then examined by cryo-scanning electron microscopy. No embolisms were found in leaves frozen to -3 degrees C and thawed. In contrast, 34% of vessels were embolized in thawed leaves that had been frozen to -6 degrees C. This difference was seen also in the extent of extracellular ice blocks in the mid-vein expansion zones in leaves frozen to -3 and -6 degrees C, which occupied 3 and 14% of the mid-vein area, respectively. While the proportion of embolism depended on nadir temperature, it was independent of season (and hence of acclimation state). From the observation that increased embolism at lower nadir temperature was related to the freeze-induced redistribution of water, we hypothesize that the dehydration of cell walls and cells caused by the redistribution exerts sufficient tension on xylem water to induce cavitation on thawing.
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Wolfe J, Laforce C, Friedman B, Sokol W, Till D, Della Cioppa G, van As A. Formoterol, 24 microg bid, and serious asthma exacerbations: similar rates compared with formoterol, 12 microg bid, with and without extra doses taken on demand, and placebo. Chest 2006; 129:27-38. [PMID: 16424410 DOI: 10.1378/chest.129.1.27] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
STUDY OBJECTIVES The primary objective was to determine whether high-dose formoterol, 24 mug bid, was associated with more asthma exacerbations compared with lower formoterol doses in patients with stable persistent asthma. Serious asthma exacerbations (life threatening or requiring hospitalization) were the primary end point. Secondary end points included significant exacerbations requiring systemic corticosteroids, all exacerbations, and changes in FEV1. DESIGN In a multicenter, placebo-controlled, parallel-group study, patients were randomized to 16 weeks of treatment with formoterol, 24 microg bid; formoterol, 12 microg bid, with up to two additional 12-microg doses daily on demand for worsening symptoms (12 microg bid plus on demand); formoterol, 12 microg bid; or placebo. The formoterol 12-microg-bid plus on-demand regimen was administered open label, while the other three regimens were double blind. SETTING Outpatient clinics. PATIENTS A total of 2,085 patients aged > or = 12 years with stable, persistent asthma were enrolled and treated; 65% (n = 1,347) received regular concomitant antiinflammatory therapy during the study. MEASUREMENTS AND RESULTS Nine patients had respiratory-related serious adverse events (SAEs) requiring hospitalization: two patients (0.4%) in the 24-microg-bid group; one patient (0.2%) in the 12-microg-bid plus on-demand group; five patients (0.9%) in the 12-microg-bid group; and one patient (0.2%) in the placebo group. All of these events were asthma related, except for two SAEs in the 12-microg-bid group that were later considered not to be asthma related by independent reviewers who were not associated with the conduct of the study. The proportions of patients with significant asthma exacerbations (requiring systemic corticosteroids) were similar in the 24-microg-bid group (6.3%, 33 of 527 patients), 12-microg-bid group (5.9%, 31 of 527 patients) and placebo group (8.8%, 45 of 514 patients) and lower in the 12-microg-bid plus on-demand group (4.4%, 23 of 517 patients; p = 0.0057 vs placebo). All treatments were well tolerated. All formoterol treatment regimens had a significant effect on FEV1 measured 2 h after dose during the study (p < 0.0001 vs placebo); and on predose trough FEV1 measured at all visits after baseline (p < 0.002 vs placebo). CONCLUSIONS Treatment with formoterol, 24 microg bid, was not associated with an increase in serious asthma exacerbations compared with the lower formoterol doses or placebo.
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Fletcher NH, Hollenberg LCL, Smith J, Tarnopolsky AZ, Wolfe J. Vocal tract resonances and the sound of the Australian didjeridu (yidaki) II. Theory. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2006; 119:1205-13. [PMID: 16521781 DOI: 10.1121/1.2146090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The didjeridu (didgeridoo) or yidaki of the Australian Aboriginal people consists of the narrow trunk of a small Eucalypt tree that has been hollowed out by the action of termites, cut to a length of about 1.5 m, smoothed, and decorated. It is lip-blown like a trumpet and produces a simple drone in the frequency range 55 to 80 Hz. Interest arises from the fact that a skilled player can make a very wide variety of sounds with formants rather like those of human vowels, and can also produce additional complex sounds by adding vocalization. An outline is given of the way in which the whole system can be analyzed using the harmonic-balance technique, but a simpler approach with lip motion assumed shows easily that upper harmonics of the drone with frequencies lying close to impedance maxima of the vocal tract are suppressed, so that formant bands appear near impedance minima of the vocal tract. This agrees with experimental findings. Simultaneous vibration of the player's lips and vocal folds is shown to generate multiple sum and difference tones, and can be used to produce subharmonics of the drone. A brief discussion is given of player preference of particular bore profiles.
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Schulman JH, Mobley JP, Wolfe J, Stover H, Krag A. A 1000+ channel bionic communication system. CONFERENCE PROCEEDINGS : ... ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL CONFERENCE 2006; 2006:4333-4335. [PMID: 17947078 DOI: 10.1109/iembs.2006.259637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The wireless electronic nervous system interface known as the functional electrical stimulation-battery powered bion system is being developed at the Alfred Mann Foundation. It contains a real-time propagated wave micro-powered multichannel communication system. This system is designed to send bi-directional messages between an external master controller unit (MCU), and each one of a group of injectable stimulator-sensor battery powered bion implants (BPB). The system is capable of communicating in each direction about 90 times per second using a structure of 850 time slots within a repeating 11 millisecond time window. The system's total Time Division Multiple Access (TDMA) communication capability is about 77,000 two-way communications per second on a single 5 MHz wide radio channel. Each time slot can be used by one BPB, or shared alternately by two or more BPBs. Each bidirectional communication consists of a 15 data bit message sent from the MCU sequentially to each BPB and 10 data bit message sent sequentially from each BPB to the MCU. Redundancy bits are included to provide error detection and correction. This communication system is designed to draw only a few microamps from the 3.6 volt, 3.0 mAHr lithium ion (LiIon) battery contained in each BPB, and the majority of the communications circuitry is contained within a 1.4x5 mm integrated circuit.
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Wolfe J. 1982 Yearbook of surgery. Edited by S. I. Schwartz. 235 mm × 155 mm. Pp. 459. Illustrated. 1982. London: Year Book. £31.00. Br J Surg 2005. [DOI: 10.1002/bjs.1800700828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Dussel V, Hilden JM, Watterson J, Moore C, Weeks JC, Wolfe J. Impact of planning the location of death in children with cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.8063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Fletcher NH, Smith J, Tarnopolsky AZ, Wolfe J. Acoustic impedance measurements-correction for probe geometry mismatch. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2005; 117:2889-95. [PMID: 15957759 DOI: 10.1121/1.1879192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The effect of evanescent mode generation, due to geometrical mismatch, in acoustic impedance measurements is investigated. The particular geometry considered is that of a impedance probe with an annular flow port and a central microphone, but the techniques are applicable to other geometries. It is found that the imaginary part of the measured impedance error is proportional to frequency, and that the sign of the error is positive for measurements made on tubes with diameter much larger than that of the inlet port, but negative for tubes with diameter close to that of the inlet. The result is a distortion of the measured frequencies of the impedance minima of the duct while the maxima are largely unaffected. There is, in addition, a real resistive component to the error that varies approximately as the square root of the frequency. Experiment confirms the results of the analysis and calculations, and a calibration procedure is proposed that allows impedance probes that have been calibrated on a semi-infinite tube of one diameter to be employed for measurements on components with an inlet duct of some very different diameter.
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Wolfe J, LaForce C, Ostrom N, Korenblat P, Orevillo C, Ziehmer B, Till D, Stenglein S. Formoterol 24 μg is not associated with an increase in serious asthma exacerbations in patients with persistent asthma. J Allergy Clin Immunol 2005. [DOI: 10.1016/j.jaci.2004.12.611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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91
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Lapidus R, Wolfe J, Greos L, Friedman B, Orevillo C, Ziehmer B, Till D, Stenglein S. Formoterol 24 μg provides effective bronchodilation and is well tolerated in patients with persistent stable asthma. J Allergy Clin Immunol 2005. [DOI: 10.1016/j.jaci.2004.12.610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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92
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Wolfe J, Chipman R. Reducing symmetric polarization aberrations in a lens by annealing. OPTICS EXPRESS 2004; 12:3443-3451. [PMID: 19483870 DOI: 10.1364/opex.12.003443] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Radially symmetric retardance was found in antireflection coated, molded aspheric glass lenses by measurement with a Mueller matrix imaging polarimeter. The source of the unexpected polarization aberration is traced to a remarkably symmetric radial stress birefringence in the glass believed to arise during fire-polishing of the surfaces. While annealing the lenses relieves much of the stress birefringence, reducing the retardance of the lenses by a factor of five, the lenses remained unusable.
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93
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Mack JW, Hilden JM, Watterson J, Grier HE, Weeks JC, Wolfe J. Factors associated with the quality of care at the end of life in children with cancer. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.8529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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94
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Makrinou E, Fox M, Wolfe J, Cameron J, Taylor K, Edwards YH. DNM1DN: a new class of paralogous genomic segments (duplicons) with highly conserved copies on chromosomes Y and 15. Ann Hum Genet 2004; 68:85-92. [PMID: 15008788 DOI: 10.1046/j.1529-8817.2003.00076.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Screening a testis cDNA selection library for Y-linked genes yielded 79 cDNAs. Of these, 9 matched the 3' region of the dynamin 1 gene (DNM1) on chromosome 9q34 with >90% identity. Fluoresence in situ hybridisation and PCR amplification were used to localise a large number of DNM1-like sequences to human chromosomes 15 and Y. PCR amplification of overlapping Y-linked YACs allowed a more accurate mapping of the Y-linked DNM1-like cDNAs to a euchromatic locus in close proximity to heterochromatin at Yq11.23. A search of the genome database identified 64 highly homologous copies of the DNM1 fragment. Most of these copies were localised to chromosomes 15 and Y, but others mapped to chromosomes 5, 8, 10, 12, 19 and 22. These sequences exhibit all the major features of a duplicon and have been designated DNM1DN (DNM1 duplicon). Evolutionary studies using fluorescence in situ hybridisation indicate that transposition of the DNM1DN sequence to chromosome 15 took place earlier in primate evolution than the transposition to the Y chromosome. The translocation to the Y took place at a time following the divergence of a common ancestor from gorilla, approximately 4-7 million years ago.
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MESH Headings
- Animals
- Chromosome Mapping
- Chromosomes, Human, Pair 15
- Chromosomes, Human, Y
- Chromosomes, Mammalian
- Conserved Sequence
- DNA, Complementary
- Dynamin I/genetics
- Evolution, Molecular
- Gene Library
- Genes, Duplicate
- Genome, Human
- Gorilla gorilla/genetics
- Humans
- In Situ Hybridization, Fluorescence
- Male
- Multigene Family
- Pan troglodytes/genetics
- Phylogeny
- Polymerase Chain Reaction
- Testis
- Y Chromosome
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Liapis C, Wolfe J, Bergqvist D. Re: the impact of training in unselected patients on mortality and morbidity in carotid endarterectomy in a vascular training center and the recommendations of the European Board of Surgery Qualification in Vascular Surgery. A Rijbroek, W Wisselink, J A Rauwerda. Eur J Vasc Endovasc Surg 2004; 27:336-7. [PMID: 14769505 DOI: 10.1016/j.ejvs.2003.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/17/2003] [Indexed: 10/26/2022]
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96
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Petrelli D, Kaushal Sharma M, Wolfe J, Al-Azem A, Hershfield E, Kabani A. Strain-related virulence of the dominant Mycobacterium tuberculosis strain in the Canadian province of Manitoba. Tuberculosis (Edinb) 2004; 84:317-26. [PMID: 15207807 DOI: 10.1016/j.tube.2004.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/13/2004] [Indexed: 11/25/2022]
Abstract
SETTING The Canadian province of Manitoba. OBJECTIVE To confirm the putative hypervirulence observed in Mycobacterium tuberculosis Type1 strain and further characterize the progression and manifestation of pulmonary tuberculosis caused by this strain in comparison to other common clinical isolates from Manitoba. DESIGN C3H and BALB/c mice were exposed to aerosols either of Type1, Type2, Type5, Type72 or H37Rv strain to study their respective survival profiles. Additionally, bacillary loads and lung histology were examined at 15 days post-exposure. RESULTS In both mouse models, Type-1 infected mice succumbed to disease significantly earlier than other strains (p < or =0.0002). Differences between average log(10) CFU values between clinical isolates were less than 1log(10) difference. In C3H mice, the amount of granulomatous inflammation was highest in Type1 infected mice but not significantly different than all clinical strains. In contrast, BALB/c mice infected with Type1 induced the lowest amount of granulomatous inflammation compared to other clinical isolates. CONCLUSION Our results indicate that although mice infected with the Type1 strain died significantly earlier than mice infected with other clinical strains in both C3H and BALB/c mice, the hypervirulence of the Type1 strain is not attributed to the growth rate of the organism, as differences in growth between clinical M. tuberculosis isolates were insignificant.
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Sharma MK, Al-Azem A, Wolfe J, Hershfield E, Kabani A. Identification of a predominant isolate of Mycobacterium tuberculosis using molecular and clinical epidemiology tools and in vitro cytokine responses. BMC Infect Dis 2003; 3:3. [PMID: 12697047 PMCID: PMC154093 DOI: 10.1186/1471-2334-3-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2002] [Accepted: 04/08/2003] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Tuberculosis (TB) surveillance programs in Canada have established that TB in Canada is becoming a disease of geographically and demographically distinct groups. In 1995, treaty status aboriginals from the province of Manitoba accounted for 46% of the disease burden of this sub-group in Canada. The TB incidence rates are dramatically high in certain reserves of Manitoba and are equivalent to rates in African countries. The objective of our study was to identify prevalent isolates of Mycobacterium tuberculosis in the patient population of Manitoba using molecular epidemiology tools, studying the patient demographics associated with the prevalent strain and studying the in vitro cytokine profiles post-infection with the predominant strain. METHODS Molecular typing was performed on all isolates available between 1992 to 1997. A clinical database was generated using patient information from Manitoba. THP-1 cells were infected using strains of M. tuberculosis and cytokine profiles were determined using immunoassays for cytokines IL-1beta, IL-10, IL-12, IFN-gamma and TNF-alpha. RESULTS In Manitoba, 24% of the disease burden is due to a particular M. tuberculosis strain (Type1). The strain is common in patients of aboriginal decent and is responsible for at least 87% of these cases. Cytokine assays indicate that the Type1 strain induces comparatively lower titers of IL-1beta, IFN-gamma and TNF-alpha in infected THP-1 cells as compared to H37Ra and H37Rv strains. CONCLUSION In Manitoba, Type1 strain is predominant in TB patients. The majority of the cases infected with this particular strain are newly active with a high incidence of respiratory disease, positive chest radiographs and pulmonary cavities. In vitro secretion of IL-1beta, IFN-gamma and TNF-alpha is suppressed in Type1 infected culture samples when compared to H37Ra and H37Rv infected cells.
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Buhl R, Hanf G, Solèr M, Bensch G, Wolfe J, Everhard F, Champain K, Fox H, Thirlwell J. The anti-IgE antibody omalizumab improves asthma-related quality of life in patients with allergic asthma. Eur Respir J 2002; 20:1088-94. [PMID: 12449159 DOI: 10.1183/09031936.02.00016502] [Citation(s) in RCA: 107] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The aim of the present study was to determine the effect of treatment with omalizumab, an anti-immunoglobulin E antibody, on asthma-related quality of life (AQoL) in patients with moderate-to-severe allergic asthma. A total of 546 patients with allergic asthma were randomised to double-blind subcutaneous treatment with either placebo or omalizumab for 52 weeks. A constant beclomethasone dipropionate dose was maintained during the first 16 weeks (steroid-stable phase). This was followed by a 12-week steroid-reduction phase. The core study was followed by a 24-week double-blind extension phase. AQoL was evaluated at baseline and at the end of the steroid-stable (week 16), steroid-reduction (week 28) and extension phases (week 52) using the Juniper Asthma Quality of Life Questionnaire (AQLQ). Baseline AQLQ scores were comparable for the two treatment groups. Relative to placebo, omalizumab-treated patients demonstrated statistically significant improvements from baseline across all four AQLQ domains, as well as overall AQoL score, at weeks 16 (except environmental exposure), 28 and 52. Patients on omalizumab were also more likely to achieve clinically significant improvements in AQoL during the course of the study. Overall, almost 70% of patients and investigators rated treatment with omalizumab as "excellent/good", compared with approximately 40% of placebo recipients. Clinical studies show that omalizumab enhances disease control whilst reducing corticosteroid consumption in patients with allergic asthma. The results of the present study show that these changes are paralleled by improvements in asthma-related quality of life that are meaningful to such patients.
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Abstract
Seventeen empirical studies that relate the ways of coping employed by family caregivers of persons affected by dementia to their health and morale are critically reviewed for the purposes of determining whether there is any consensus regarding ways of coping that serve health-protective functions, and whether the studies' designs and measurement strategies are faithful to the transactional theory of coping upon which they are founded. Due to the use of cross-sectional designs, the adoption of different coping and outcome measures, the lack of specificity and the incomparability of the target stressors, the reliance on retrospective reports, and the use of inappropriate response formats, among other limitations, the interpretability of the cumulative body of empirical findings on caregiver coping is questionable. Ways of strengthening and broadening coping research to make it more fruitful and theoretically coherent are presented.
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