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oldtexasdog

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Noise Pollution

Noise is a recognized form of pollution, but it is difficult to measure because the annoyance or discomfort it causes varies between individuals. There is evidence that hearing sensitivity among young Americans is decreasing because of exposure to noise, including overly amplified music. Apart from hearing loss, excessive noise can cause sleeplessness, ulcers, high blood pressure, and possibly heart disease. A 2005 study found that city residents are willing to pay how much for noise reduction? 

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1 hour ago, oldtexasdog said:

Noise Pollution

Noise is a recognized form of pollution, but it is difficult to measure because the annoyance or discomfort it causes varies between individuals. There is evidence that hearing sensitivity among young Americans is decreasing because of exposure to noise, including overly amplified music. Apart from hearing loss, excessive noise can cause sleeplessness, ulcers, high blood pressure, and possibly heart disease. A 2005 study found that city residents are willing to pay how much for noise reduction? 

 

HONK IF YOU HATE NOISE POLLUTION!

 

Over the last few years, the Missouri Highway Department has been putting up sound barrier walls along heavily traveled highways that run through residential sections.  I made a joke it's like Dolby Noise Reduction for the highway, and I think one person got it.

  • Haha 1

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Do you remember how to forget?

 

Long Term Potentiation (LTP)  refers to an increase in the response of a neuron to repeated stimuli.  Human memories don't take place in any specific area of the brain, but are distributed throughout.  Taking the example of the memory of your first kiss; how it felt might be stored in one region, while how it tasted in another and how it smelled in yet another.  This results in branches of neural activity, and the more those connections are re-visited, the more they are reinforced.

 

A colloquial term for this phenomena is 'memorization', and it has served the human species very well.

 

Like anything, however, there is a down side, and one is a specific form of memory loss caused by LTP.

 

In LTP induced memory loss, information that is stored adjacent to a LTP branch can be difficult or impossible to recall; the existing LTP connection is so strong that it overwhelms our attempts to recall information that is nearby.

 

This is why recall can be improved by thinking of something else for a bit; it is then more likely that the data at 'the tip of your tongue' can be recalled without being swamped by LTP.

 

Image result for long term potentiation example

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16 hours ago, RichP714 said:

 

Thanks @RichP714, that is a super experiment. And something so simple that should/could be done in every high school physics lab.

 

Imagine working every day for years with a guy that would integrate "discoveries" like this and share them with your entire company?

 

I worked for 16 years at Autodesk, first in Sausalito, then in San Rafael, CA.  John Walker, the author of that article, a founder of Autodesk, now living in Switzerland, and owner of www.fourmilab.ch, roamed the halls and shared stuff like this often. Some fun stories.

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