- published: 20 Jun 2013
- views: 146422
Deafness, or hearing impairment, is a partial or total inability to hear where the ability would usually be expected.
Hearing sensitivity is indicated by the quietest sound that an animal can detect, called the hearing threshold. In the case of humans and some animals, this threshold can be accurately measured by a behavioral audiogram. A record is made of the quietest sound that consistently prompts a response from the listener. The test is carried out for sounds of different frequencies. There are also electro-physiological tests that can be performed without requiring a behavioral response.
Normal hearing thresholds within any given species are not the same for all frequencies. If different frequencies of sound are played at the same amplitude, some will be perceived as loud, and others quiet or even completely inaudible. Generally, if the gain or amplitude is increased, a sound is more likely to be perceived. Ordinarily, when animals use sound to communicate, hearing in that type of animal is most sensitive for the frequencies produced by calls, or in the case of humans, speech. All levels of the auditory system contribute to this sensitivity toward certain frequencies, from the outer ear's physical characteristics to the nerves and tracts that convey the nerve impulses of the auditory portion of the brain.
how the fuck can you have pride in a country
how empty,ignorant and blind do you gotta be
when you fly your filthy fucking flag
your saluting n empty,wortless,useless farce
yur saluting racism
from the day the country started
it's been a part of it
and your saluting your own oppressor
and if your that fucking stupid
you deserve everything you get
your country is shit
your country is total shit and you're fat
with pride as you as you swallow every bit of it
i hope you go first in a war you've pay for
and i hope you still love your country when
your riddled with bullets in foreign country
showerd with bombs and left for dead
so fly their flag
and keep swallowing their shit
i'll never be proud or be supporting it
and i hope one day you all get your chane
as you die for freedom
the power is still in their hands
your country is shit
and you're all fucking shitif your
ignorant enough to believe it and support it
i hope you go first in a war you pay for
and think your protecting freedom when
you're killig innocent women and children
preserving capitalism
for the ones that stay in power
preserving your right to pay taxes
dying for the right to be kept in line
i hope that one day you all get your chance
as your dying for freedom