Jose Maria Perez-Macias

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OBJECTIVE The aim of this study is to explore the spectral patterns of spontaneous magnetoencephalography (MEG) activity across the lifespan. APPROACH Relative power (RP) in six frequency bands (delta, theta, alpha, beta-1, beta-2 and gamma) was calculated in a sample of 220 healthy subjects with ages ranging from 7 to 84 years. MAIN RESULTS A(More)
OBJECTIVE Crowdsourcing dietary ratings for food photographs, which uses the input of several users to provide feedback, has potential to assist with dietary self-monitoring. MATERIALS AND METHODS This study assessed how closely crowdsourced ratings of foods and beverages contained in 450 pictures from the Eatery mobile app as rated by peer users (fellow(More)
– Sleep quality has an important impact in overall health. There are several new commercially available devices for sleep tracking. Although they have been tested in sleep laboratories, for some users, estimates are reliable whereas for others are very different. In this paper we present a framework to predict the error range of the total sleep time. We(More)
The aim of this study is to explore the capability of an Emfit (electromechanical film transducer) mattress to detect snoring (SN) by analyzing the spectral differences between normal breathing (NB) and SN. Episodes of representative NB and SN of a maximum of 10 min were visually selected for analysis from 33 subjects. To define the bands of interest, we(More)
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