As a result of my involvement in another thread I went to my local optometrist yesterday to get my eyes tested.
WRT my short distance vision both of my eyes displayed a degree of typical ageing impairment, with my left eye most affected. When used in isolation, both displayed a degree of blurring at short distances. However, when used together a much sharper image emerged.
My optometrist explained that this is quite common, as the brain is capable of taking two compromised images and processing them into a composite image which is much more accurate than either of the two images taken in isolation.
I'm wondering whether the same phenomenon applies to our auditory faculties.
Ideas, comments?
WRT my short distance vision both of my eyes displayed a degree of typical ageing impairment, with my left eye most affected. When used in isolation, both displayed a degree of blurring at short distances. However, when used together a much sharper image emerged.
My optometrist explained that this is quite common, as the brain is capable of taking two compromised images and processing them into a composite image which is much more accurate than either of the two images taken in isolation.
I'm wondering whether the same phenomenon applies to our auditory faculties.
Ideas, comments?
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> same phenomenon applies to our auditory faculties.
You have ears so you can hear the tiger sneaking up behind you.
Plug one ear. Can you still hear the tiger as sharp? Are you sure which way to dodge and run?
The 2-eye 2-ear system applies to large swaths of the animal kingdom. More than likely, or I will suppose, this is because of better acuity with two sensors separated on the body but merged in the brain. (OK, I have no evidence that a lobster merges the 2-eye signals in his brain as you do. Cows have very little binocular vision, though their ears may be merged to a single world-picture. Cats and dogs clearly have stereo audio processing.)
You have ears so you can hear the tiger sneaking up behind you.
Plug one ear. Can you still hear the tiger as sharp? Are you sure which way to dodge and run?
The 2-eye 2-ear system applies to large swaths of the animal kingdom. More than likely, or I will suppose, this is because of better acuity with two sensors separated on the body but merged in the brain. (OK, I have no evidence that a lobster merges the 2-eye signals in his brain as you do. Cows have very little binocular vision, though their ears may be merged to a single world-picture. Cats and dogs clearly have stereo audio processing.)
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