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Both hypoxia and carbon dioxide increase cerebral blood flow (CBF), and their effective interaction is currently thought to be additive. Our objective was to test this hypothesis. Eight healthy subjects breathed a series of progressively hypoxic gases at three levels of carbon dioxide. Middle cerebral artery velocity, as an index of CBF; partial pressures of carbon dioxide and oxygen and concentration...
This paper describes the bio-inspired visual detection for the smart user experience based on neuromorphic system, mimicking the visual cortex. The neuromorphic system is investigated for visual detection of users and their reaction, based on the VLSI neurons and synapses by CMOS conductance and Hodgkin-Huxley formalism. The proposed neuromorphic system exhibits the biologically plausible intelligent...
In this paper, we propose a hierarchically iterate model of human conceptualization and cognition. Based on the theory of dual structure of cognition and related physiological evidence, we firstly propose the notion of concept space in human brain and a corresponding conceptualization model. Conceptualization is the process of forming concepts in our brain. The concept of cognition process is then...
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