SPACE-TIME ORGANIZATION OF CARDIAC

Functional building blocks of the myocardium - cardiomyocytes - have a number of important physiological properties.

Under the ability to understand the contractility of cardiomyocytes shorten. At the heart of shortening is actomyosin conjugation.

Excitability is the ability to generate cardiomyocytes in response to electrical stimulation of action potentials.

Automatism is understood as the ability to produce cardiomyocytes Autowave electrical impulses under the influence of which (being isolated), they can be in a state of rhythmic contractions. This property is most developed in the conduction system of the heart, above all, the sinoatrial and atrioventricular nodes.

Conductivity means the transfer of excitation conduction system of the source (under physiological conditions, the sinoatrial node) to contractile cardiomyocytes.

When the result in (spontaneous) depolarization transmembrane potential reaches a threshold level, the cardiomyocytes are generated action potentials.

Ministry of Health

Описание:

Grand Chief Doug Kelly, Chair of the First Nations Health Council, was joined today by the Honourable Rona Ambrose, Federal Minister of Health and B.C. Minister of Health Terry Lake, to celebrate the historic transfer of all health programs and services for B.C. First Nations previously administered by Health Canada to the new First Nations Health Authority (FNHA).

For more information, please visit:
http://www.newsroom.gov.bc.ca/2013/10...

Stay connected:
http://www.gov.bc.ca/connect

SOURCES electrophysiological processes in the Heart

AECG is based on the registration of the electromagnetic field of the heart. Its source is the contractile myocardium and vascular system, organized into a single space-time structure.

Through the neurohumoral regulation of this structure is integrated in the body by means of sensors and higher neural structures respond to changes in the world.

Dr. Steve Potter - Closed-loop, open-source electrophysiology p1/2

Описание:

This talk was given on 10/19/12 by Dr. Steve Potter, Associate Professor and Director of the Laboratory for Neuroengineering within the Coulter Department of Biomedical Engineering at Georgia Tech and Emory University. Dr. Potter discusses his research using cultured mammalian brain cells on multi-electrode arrays to form a long-term, two-way interface between cultured neural networks and a computer to examine patterns of activation and information processing.

Emory University's Graduate Program in Neuroscience hosts weekly lectures by neuroscience researchers for their Frontiers in Neuroscience Seminar Series.

Of recorders

There are two categories of AECG recorders: a constant recording and event.

Registrars have a permanent record of at least 3, more often with the possibility of 12-lead, fitted with solid carriers, the record is saved digitally capacity of 100 MB, and enable continuous monitoring for at least 72 hours (3 days). Their weight decreases rapidly in recent models do not exceed 150 g (Fig. 3.1.).

With the transition to solid registrars gone are the problems of tape recordings, and they should be simply forgotten.

Fig. 3.1. One of the receptionists AECG CardioSens. Weight 130 g, dimensions 80h60h18 mm3

1.2 V power supply, one element of AA

Mandatory element of any registrar - a button to activate by pressing on which, the examinee records date in accordance with the protocol of the time diary AECG (medication, the occurrence of clinical symptoms, other specified protocol diary events).

Registration and analysis of records are separated by time.

Technical conditions of registration for the duration of the vast span of time beyond the control of the medical staff or even the majority of registrars, are outside the control at all, but that they determine the quality of the recording, which requires highly skilled personnel.

Reel-to-Reel Recorders : Components of Reel-to-Reel Tape Recorder

Описание:

Expert studio engineer talks about the electronic components of a reel-to-reel tape deck and what the most important pieces are in this free stereo-repair video.

Expert: sledge
Bio: Kurt Glaser, callsign of N7QJM, has been an active ham since the early 90's. He built his first ham radio in 1970. N7QJM operates out of his 'ham shack' on the All Emergencies channel.
Filmmaker: kurt glaser