At 1/25/13 07:38 PM, Gimmick wrote:
Okay, I'll have to call bullshit on this. Ultrasound is not harmful. What was harmful, are X-rays. X-rays were shown to damage fetuses if they were taken more than a few times, and so doctors switched to ultrasound, because that's what is is, just high frequency sound. If high frequency sounds were bad for fetuses, then taking a pregnant woman to an opera house each day of the year would result in an autistic baby.
Ultrasound is on the order of 1,000,000 Hz, whereas opera music would be under 20,000 Hz. Diagnostic ultrasound is a much higher frequency wave than audible noise, as opera singers would be able to generate. The effects would not be the same.
I mean, think about it. The links you gave, OP, were for rats and mice. Now there's a possibility that this may be true in rats and mice, or the thing was made up, or that correlation isn't causation.
So then let me ask you. If the World Health Organization is saying that the only safety research we have was performed on rats and mice, and the WHO is also saying that based on these models:
"There are many gaps in the data from human studies that
prevent a meaningful risk assessment of ultrasonic exposure.
It is therefore necessary to use the results of animal studies to
test the hypothesis that similar effects may also occur in human
subjects. Animal studies suggest that neurological, behavioural,
developmental, immunological, haematological changes and reduced
fetal weight can result from exposure to ultrasound."
Do you still think it's safe to use ultrasound on human fetuses without further research? I don't.
A good test would be to have a bunch of cells (say unicellular organisms like Amoeba, or a few nerve cells) in a petri dish, and see what ultrasound does to them, with varying power output. If they vibrate, that's fine and dandy, but if they don't get impaired or killed in any way because of the ultrasound or the power output, then all this discussion means jack.
Ultrasound promotes the growth of bacteria by forcing metabolism forward.
It forces the bacteria to grow in part by stimulating enzymes that breaks down sugars. These enzymes are at the center of metabolism. This effect is also seen in plants.
Similarly, ultrasound is used in physical therapy in order to increase human cell growth. In fact, an internationally famous autism researcher is claiming that because ultrasound alters the growth of cells, it could be a direct link to developmental disorders.
Also, on the topic of how ultrasound affects nerve cells, Sony entertainment patented the use of ultrasound to induce virtual reality because it fucks with neural processing. Passing ultrasound through brain cells can force them to fire. So, if you targeted ultrasound on the cells that linked up to the smell of cake, you'd smell cake. It does a lot of weird stuff.