26 research outputs found

    Critical Essay: Organizational cognitive neuroscience drives theoretical progress, or: The curious case of the straw man murder:organizational cognitive neuroscience drives theoretical progress, or: The curious case of the straw man murder

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    In this critical essay, we respond to Lindebaum’s (2016) argument that neuroscientific methodologies and data have been accepted prematurely in proposing novel management theory. We acknowledge that building new management theories requires firm foundations. We also find his distinction between demand and supply side forces helpful as an analytical framework identifying the momentum for the contemporary production of management theory. Nevertheless, some of the arguments Lindebaum (2016) puts forward, on closer inspection, can be contested, especially those related to the supply side of organizational cognitive neuroscience (OCN) research: fMRI data, motherhood statements and ethical concerns. We put forward a more positive case for OCN methodologies and data, as well as clarifying exactly what OCN really means, and its consequences for the development of strong management theory

    Interoception in anxiety and depression

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    We review the literature on interoception as it relates to depression and anxiety, with a focus on belief, and alliesthesia. The connection between increased but noisy afferent interoceptive input, self-referential and belief-based states, and top-down modulation of poorly predictive signals is integrated into a neuroanatomical and processing model for depression and anxiety. The advantage of this conceptualization is the ability to specifically examine the interface between basic interoception, self-referential belief-based states, and enhanced top-down modulation to attenuate poor predictability. We conclude that depression and anxiety are not simply interoceptive disorders but are altered interoceptive states as a consequence of noisily amplified self-referential interoceptive predictive belief states

    Phenytoin Pharmacokinetics After Intravenous Administration to Patients Receiving Enteral Tube-Feeding

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    Serial plasma samples were collected after administration of 13 intravenous dose of phenytoin to 11 patients with head injury; 5 to patients who had been receiving enteral feeds for less than 5 days (group 1), and 8 to patients who had been receiving enteral feeds for loner than 5 days (group 2). Average plasma phenytoin concentrations were higher in group 1 than in group 2 (0.003). The median intravenous study dose was the same (300 mg) in both groups (p=0.17). Group 2 received slightly higher doses expressed as mg/kg (median of 5.45 mg/kg compared to 4.29 mg/kg in group 1, p=0.21). Phenytoin was more rapidly eliminated following intravenous dosing patients receiving long-term enteral feeding. V-max was higher in group 2 than in group 1 (medians, 709 versus 394 mg/day) and K-m smaller (medians, 2.5 versus 3.9 mg/l), but volume of distribution was similar in both groups (p=0.88). The kinetic parameters of phenytoin in group 1 were similar to previously published population pharmacokinetic parameters. In order to maintain phenytoin concentrations adequate for seizure prophylaxis in patients receiving long-term enteral feeding it would be advisable to decrease the dosing interval as well as increasing the phenytoin dose when the drug is administered intravenously
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