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Does PAC disconnection cause dreams/hallucinations to...

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GreenXenon...
Posted: Thu Jul 02, 2009 5:13 am
Guest
Hi:

If the primary auditory cortex is completely disconnected from the
rest of the brain, will dreams be silent? Also, will it be impossible
for the individual to experience any auditory hallucinations even in
scenario that would otherwise cause them -- such as use of LSD,
ketamine or other hallucinogens?

I guess the answer is yes. I could be wrong though.

I'm thinking dreams/hallucinations would be something like watching TV/
movies, with the "mute" button on.

Do I guess correctly?


Thanks
 
BOfL...
Posted: Thu Jul 02, 2009 5:31 am
Guest
On Jul 3, 1:13 am, GreenXenon <glucege... at (no spam) gmail.com> wrote:
[quote:903653bbf4]Hi:

If the primary auditory cortex is completely disconnected from the
rest of the brain, will dreams be silent? Also, will it be impossible
for the individual to experience any auditory hallucinations even in
scenario that would otherwise cause them -- such as use of LSD,
ketamine or other hallucinogens?

I guess the answer is yes. I could be wrong though.

I'm thinking dreams/hallucinations would be something like watching TV/
movies, with the "mute" button on.

Do I guess correctly?

Thanks
[/quote:903653bbf4]
A good question.

Do you actually have auditory dreams?

I sense music in such states, rather like imagning a piece playing
while awake.

I would suggest we are experiencing different vibratory rates
(parallel realities) when we dream, and have a problem when we make
try to make comparisons from either side of the experience.

BOfL
 
James Warren...
Posted: Thu Jul 02, 2009 11:24 am
Guest
GreenXenon wrote:
[quote:f35bd3b9ac]Hi:

If the primary auditory cortex is completely disconnected from the
rest of the brain, will dreams be silent? Also, will it be impossible
for the individual to experience any auditory hallucinations even in
scenario that would otherwise cause them -- such as use of LSD,
ketamine or other hallucinogens?

I guess the answer is yes. I could be wrong though.

I'm thinking dreams/hallucinations would be something like watching TV/
movies, with the "mute" button on.

Do I guess correctly?


Thanks
[/quote:f35bd3b9ac]
It would be worse than that! You would no longer know what sound was or have
any memory of sound and you wouldn't miss it.

--
jw.

Science is a candle in the dark. - Carl Sagan.
 
Curt Welch...
Posted: Thu Jul 02, 2009 12:07 pm
Guest
James Warren <jwwarren987 at (no spam) gmail.com> wrote:
[quote:45a1ebfb48]GreenXenon wrote:
Hi:

If the primary auditory cortex is completely disconnected from the
rest of the brain, will dreams be silent? Also, will it be impossible
for the individual to experience any auditory hallucinations even in
scenario that would otherwise cause them -- such as use of LSD,
ketamine or other hallucinogens?

I guess the answer is yes. I could be wrong though.

I'm thinking dreams/hallucinations would be something like watching TV/
movies, with the "mute" button on.

Do I guess correctly?


Thanks

It would be worse than that! You would no longer know what sound was or
have any memory of sound and you wouldn't miss it.
[/quote:45a1ebfb48]
Does the "primary auditory cortex" include all the speech and language
centers of the brain? If not, then the person would have some ability to
generate and use language which made reference to sound and in doing so,
they would have an clear understanding of what they had loss even if they
had no memory of what sound itself was _like_. They would be able to miss
not having it when someone said "didn't you hear me knocking on the door?"
and they were able to understand they had loss a sensory power.

If disconnecting the "primary auditory cortex" also removes most language
ability then it's possible they would become so unaware that they wouldn't
be able to understand what they were missing.

--
Curt Welch http://CurtWelch.Com/
curt at (no spam) kcwc.com http://NewsReader.Com/
 
James Warren...
Posted: Thu Jul 02, 2009 1:55 pm
Guest
Curt Welch wrote:
[quote:ba9ae966ad]James Warren <jwwarren987 at (no spam) gmail.com> wrote:
GreenXenon wrote:
Hi:

If the primary auditory cortex is completely disconnected from the
rest of the brain, will dreams be silent? Also, will it be impossible
for the individual to experience any auditory hallucinations even in
scenario that would otherwise cause them -- such as use of LSD,
ketamine or other hallucinogens?

I guess the answer is yes. I could be wrong though.

I'm thinking dreams/hallucinations would be something like watching TV/
movies, with the "mute" button on.

Do I guess correctly?


Thanks
It would be worse than that! You would no longer know what sound was or
have any memory of sound and you wouldn't miss it.

Does the "primary auditory cortex" include all the speech and language
centers of the brain? If not, then the person would have some ability to
generate and use language which made reference to sound and in doing so,
they would have an clear understanding of what they had loss even if they
had no memory of what sound itself was _like_. They would be able to miss
not having it when someone said "didn't you hear me knocking on the door?"
and they were able to understand they had loss a sensory power.

If disconnecting the "primary auditory cortex" also removes most language
ability then it's possible they would become so unaware that they wouldn't
be able to understand what they were missing.

[/quote:ba9ae966ad]
It's an interesting observation. I've read of cases involving total loss of
visual cortex but not auditory cortex, so I assumed it work be similar. It
would be strange: language still intact but no knowledge of sound. Could one
read for example. Does silent reading involve the auditory cortex? i think it
does. It would indeed be a curious situation.

--
jw.

Science is a candle in the dark. - Carl Sagan.
 
ZerkonXXXX...
Posted: Fri Jul 03, 2009 4:53 am
Guest
On Thu, 02 Jul 2009 08:13:40 -0700, GreenXenon wrote:

[quote:6b0965854b]Do I guess correctly?
[/quote:6b0965854b]
Is the auditory cortex responsible for sound memory?
If the auditory cortex is responsible for the processing sounds that are
being heard, how does this effect the thoughts of sound not being heard.
 
John Hasenkam...
Posted: Fri Jul 03, 2009 5:15 am
Guest
Recent studies have found activation of the auditory cortex during auditory
halluncinations.

"GreenXenon" <glucegen1x at (no spam) gmail.com> wrote in message
news:c2f6bf79-5b00-49a1-a8d3-014968b6f8bb at (no spam) q11g2000yqi.googlegroups.com...
[quote:50c8ec2737]Hi:

If the primary auditory cortex is completely disconnected from the
rest of the brain, will dreams be silent? Also, will it be impossible
for the individual to experience any auditory hallucinations even in
scenario that would otherwise cause them -- such as use of LSD,
ketamine or other hallucinogens?

I guess the answer is yes. I could be wrong though.

I'm thinking dreams/hallucinations would be something like watching TV/
movies, with the "mute" button on.

Do I guess correctly?


Thanks[/quote:50c8ec2737]
 
GreenXenon...
Posted: Tue Jul 07, 2009 5:18 am
Guest
On Jul 2, 10:24 am, James Warren <jwwarren... at (no spam) gmail.com> wrote:


[quote:65480da2fc]GreenXenon wrote:
[/quote:65480da2fc]

[quote:65480da2fc]Hi:

If the primary auditory cortex is completely disconnected from the
rest of the brain, will dreams be silent? Also, will it be impossible
for the individual to experience any auditory hallucinations even in
scenario that would otherwise cause them -- such as use of LSD,
ketamine or other hallucinogens?

I guess the answer is yes. I could be wrong though.

I'm thinking dreams/hallucinations would be something like watching TV/
movies, with the "mute" button on.

Do I guess correctly?

Thanks

[/quote:65480da2fc]

[quote:65480da2fc]It would be worse than that! You would no longer know what sound was or have
any memory of sound and you wouldn't miss it.
[/quote:65480da2fc]

I doubt it. From what I've read, the PAC is only involved in direct
perception of audio, not with anything else.
 
GreenXenon...
Posted: Tue Jul 07, 2009 5:25 am
Guest
On Jul 3, 4:15 am, "John Hasenkam" <jo... at (no spam) goawayplease.com> wrote:


[quote:eba531db76]Recent studies have found activation of the auditory cortex during auditory
halluncinations.
[/quote:eba531db76]
Are there any conditions in the primary auditory cortex that would
cause paroxysmal total deafness -- with "CRT tinnitus"* -- from the
left ear [even in dreams] without affecting audio perception in the
right ear?

*"CRT tinnitus" is a barely audible but still noticeable tinnitus
which resembles the near-ultrasonic high-frequency pure-sine-wave tone
emitted by most CRT monitors.
 
 
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