Electronic Circuits - Fundamentals &amp; Applications

Tooley, Mike

doi:10.4324/9780080477503

Cited by 35 publications

(44 citation statements)

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“…These basic EEG bands are assumed to reflect different functional processes in the brain. 35 Resonance -a system which is characterized by its own oscillation frequency and can enter into vibration if stimulated (subjected to sound waves, electromagnetic waves, or mechanical vibrations according to the nature of the system) by frequencies close to those peculiar to the system itself [255]. 36 It is important to note that neither presynaptic nor postsynaptic neurons "choose" their frequencies "at will".…”

Section: Figure 6 Composition Of the Eeg Signal From Different Frequmentioning

confidence: 99%

Natural world physical, brain operational, and mind phenomenal space–time

Fingelkurts

Neves

2010

Physics of Life Reviews

166

233

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Concepts of space and time are widely developed in physics. However, there is a considerable lack of biologically plausible theoretical frameworks that can demonstrate how space and time dimensions are implemented in the activity of the most complex life-system -the brain with a mind. Brain activity is organized both temporally and spatially, thus representing space-time in the brain. Critical analysis of recent research on the space-time organization of the brain's activity pointed to the existence of so-called operational space-time in the brain. This space-time is limited to the execution of brain operations of differing complexity. During each such brain operation a particular short-term spatio-temporal pattern of integrated activity of different brain areas emerges within related operational space-time. At the same time, to have a fully functional human brain one needs to have a subjective mental experience. Current research on the subjective mental experience offers detailed analysis of space-time organization of the mind. According to this research, subjective mental experience (subjective virtual world) has definitive spatial and temporal properties similar to many physical phenomena. Based on systematic review of the propositions and tenets of brain and mind space-time descriptions, our aim in this review essay is to explore the relations between the two. To be precise, we would like to discuss the hypothesis that via the brain operational space-time the mind subjective space-time is connected to otherwise distant physical space-time reality.Key words: spatial, temporal, consciousness, cognition, operation, architectonics, EEG, field, metastability, physics, coordinative dynamics, self-organization, cortex.

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Section: Figure 6 Composition Of the Eeg Signal From Different Frequmentioning

confidence: 99%

Natural world physical, brain operational, and mind phenomenal space–time

Fingelkurts

Neves

2010

Physics of Life Reviews

166

233

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“…An optical image of the vibration mode at this first resonance frequency is shown in the Figure 1c inset (see also movie clip 1). A quality ( Q ) factor of ~14 was obtained by dividing the resonance frequency by the width of the resonance peak at of the maximum amplitude9. The resonance frequency and Q factor are markedly lower than those (1089 Hz and 455, respectively) measured in vacuum for a nanotube sheet having similar dimensions7.…”

Section: Resultsmentioning

confidence: 99%

Nanotube Aerogel Sheet Flutter for Actuation, Power Generation and Infrasound Detection

Kang

Kim

Jang

et al. 2014

Sci Rep

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Electromagnetic induction (EMI) is a mechanism of classical physics that can be utilized to convert mechanical energy to electrical energy or electrical to mechanical energy. This mechanism has not been exploited fully because of lack of a material with a sufficiently low force constant. We here show that carbon nanotube (CNT) aerogel sheets can exploit EMI to provide mechanical actuation at very low applied voltages, to harvest mechanical energy from small air pressure fluctuations, and to detect infrasound at inaudible frequencies below 20 Hz. Using conformal deposition of 100 nm thick aluminum coatings on the nanotubes in the sheets, mechanical actuation can be obtained by applying millivolts, as compared with the thousand volts needed to achieve giant-stroke electrostatic actuation of carbon nanotube aerogel sheets. Device simplicity and performance suggest possible applications as an energy harvester of low energy air fluctuations and as a sensor for infrasound frequencies.

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“…This increased current is equivalent to a drop in resistance and thus variation in particular frequencies of light affects the resistance of the semiconductor. In other words, the resistance of the LDR depends on light [10].…”

Section: Ldr Workingmentioning

confidence: 99%