interference

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interference

 [in″ter-fēr´ens]
1. opposition to or hampering of some activity.
2. impairment of cardiac impulse conduction due to refractoriness of the tissue; the refractoriness is a physiological response to passage of a preceding impulse.
3. a premature contact point on the occlusal surface of the teeth.
electromagnetic interference electrical signals of nonphysiological origin that may affect pacemaker function; they can either inappropriately inhibit pacemaker output or trigger unnecessary pulses. Pacemakers with bipolar leads are less sensitive to this.
occlusal i's areas of interference on teeth that hamper proper occlusion and smooth, gliding, harmonious jaw movements.

in·ter·fer·ence

(in'tĕr-fēr'ens),
1. The coming together of waves in various media in such a way that the crests of one series correspond to the hollows of the other, the two thus neutralizing each other; or so that the crests of the two series correspond, thus increasing the excursions of the waves.
2. Collision within the myocardium of two waves of excitation at the junction of territories controlled by each, as is seen in atrioventricular (AV) dissociation.
3. Also in AV dissociation, the disturbance of the regular rhythm of the ventricles by a conducted impulse from the atria, for example, by a ventricular capture (interference beat).
4. The condition in which infection of a cell by one virus prevents superinfection by another virus, or in which superinfection prevents effects that would result from infection by either virus alone, even though both viruses persist.
[inter- + L. ferio, to strike]

interference

Lab medicine The effect that unmeasured components in a specimen or system have on the accuracy of a component being measured. See Electromagnetic interference, Matrix, Matrix interference, Matrix effect, Nerve interference.

in·ter·fer·ence

(in'tĕr-fēr'ĕns)
1. The coming together of waves in various media in such a way that the crests of one series correspond to the hollows of the other, the two thus neutralizing each other; or so that the crests of the two series correspond, thus increasing the excursions of the waves.
2. Collision within the myocardium of two waves of excitation at the junction of territories controlled by each, as is seen in atrioventricular dissociation.
3. Also, in atrioventricular dissociation, the disturbance of the regular rhythm of the ventricles by a conducted impulse from the atria, e.g., by a ventricular capture (interference beat).
4. The condition in which infection of a cell by one virus prevents superinfection by another virus, or in which superinfection prevents effects that would result from infection by either virus alone, even though both viruses persist.
5. Effect of a component on the accuracy of measurement of the desired analyte.
[inter- + L. ferio, to strike]

interference

see CHROMATID INTERFERENCE.

interference

Modification of light intensity arising from the joint effects of two or more coherent trains of light waves superimposed at the same point in space and arriving at the same instant. The waves may either reinforce each other, being in phase (constructive interference) or cancel each other, being out of phase (destructive interference). See coherent sources; Young's experiment; holography; phase; optical coherence tomography.

in·ter·fer·ence

(in'tĕr-fēr'ĕns)
1. The coming together of waves in various media in such a way that the crests of one series correspond to the hollows of the other, the two thus neutralizing each other; or so that the crests of the two series correspond, thus increasing the excursions of the waves.
2. Condition in which infection of a cell by one virus prevents superinfection by another virus, or in which superinfection prevents effects that would result from infection by either virus alone, even though both viruses persist.
[inter- + L. ferio, to strike]

Patient discussion about interference

Q. Does omega-3 interfere with diabetes treatment? I’m a 55 years old man, and was diagnosed with diabetes mellitus, along with high lipid levels several years ago. A couple of months ago I read that omega-3 can protect your heart and brain, so I started to take omega-3 pills every day. Yesterday I read in some website that omega-3 can interfere with the drugs I take to treat my diabetes- Is that right?

A. Omega-3 doesn’t influence the treatment of your diabetes, and since you have high lipids, that can contribute to some of the damage diabetes does to your body, omega-3, that may lower the lipid level in your may actually help you treat yourself overall better. However - consult your doctor. Better be safe than sorry...

Q. Will my bipolar meds (lamictal and depakote) interfere with my birth control pills? We have been married for the past 12 yrs but we don’t have a child because I am paranoid of delivery. But it doesn’t affect our intimacy. I am using birth control pills for the past few years and I could rely on it. Now the new problem is that I was recently diagnosed as bipolar-II. The Doctor prescribed some medicines for me. Will my bipolar meds (Lamictal and Depakote) interfere with my birth control pills?

A. there are interactions, birth control pills can reduce the amount of Lamictal in the blood, causing it to be less affective. the drug level in plasma should be monitored. ask both your therapists about it- your gynecologist and the psychiatrist.

More discussions about interference
References in periodicals archive ?
To see how significant for a type II ceramic superconductor disk to vary the interference pattern, we plot in Fig.
Because the equiphase plane in interference patterns is formed by the object shape, the geometry can be reconstructed unless the refractive index is too low to make a detectable reflection.
This is the phenomenon and characteristic of the interference pattern in a ball-like resonance cavity.
When the chemical agent comes into contact with the other chemical on the test channel, the speed of light changes and the "interference pattern starts moving, because the light arrives later or earlier," said Bevan.
A hologram is an interference pattern generated from the object being depicted.
A laser beam and a second "interference" beam focused on the array create a holographic interference pattern that is recorded onto a photopolymer on the disc.
This out-of-synchronization [i.e., not in phase] is the condition that allows the holograms to be created.) Holographic crystals rearrange their electrons in response to these beams, thus creating a necessary interference pattern.
Result: a digital representation of the interference pattern.
The two parts would meet at the photographic film, where the interference pattern would be recorded.
The TopWave thickness gauge, which is said to do a better job of this than infrared-absorption instruments, is based on a white-light interferometer that scans the interference pattern of a light beam reflecting from the material to be measured; layer thickness is then calculated from the separation of the interference pulses, and similarities or differences between material composition of the layers is not a factor.
In other words, an interference pattern generated by light waves is tuned to reproduce the surface profile of the object under investigation and to draw a realistic picture of it.
The two beams meet and overlap at the photoresist, generating an interference pattern which, in essence, provides a three-dimensional holographic record of the object.

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