中国神经科学论坛

 找回密码
 注册

扫一扫,访问微社区

QQ登录

只需一步,快速开始

楼主: zhixl

[讨论]听觉处理 auditory processing in human&a

[复制链接]
 楼主| zhixl 发表于 2005-11-22 23:35:00 | 显示全部楼层

初级视觉皮质定位的个体差异也很强,thinker_jeff想没想过怎么解释

thinker_jeff 发表于 2005-11-23 22:30:00 | 显示全部楼层
引用
原文由 zhixl 发表于 2005-11-22 23:35:37 :

初级视觉皮质定位的个体差异也很强,thinker_jeff想没想过怎么解释


This is another interesting topic. But, I think we may have more things to do about the A1 area first.fficeffice" />

Because the existing researches have hold on that A1 area can be modified by the auditory stimulus (reference to SPECIFIC LONG-TERM MEMORY TRACES IN PRIMARY AUDITORY CORTEX), and because the early speech perception can make difference on infant’s ability of phonetic discrimination (Kuhl, P. K., Conboy, B. T., Padden, D., Nelson, T. and Pruitt, J. (2005). Early speech perception and later language development: Implications for the "critical period." Language Learning and Development, 1, 237-264. Click here to receive a reprint), we may able to do some experiment to find out if the early speech perception can make measurable difference on A1 area.

Please review my idea of an experiment in your lab as the following outline. Let me know if they are reasonable and feasible. Correct me if the terminologies were incorrect.

·        Find a group of children in Chinese family with the same age. The children must be born in ffice:smarttags" />Japan, and always live with their parents and without baby-sitter for their first 7 months. Their parents must use Standard Chinese at the homes.

·        Find another group of children in Japanese family with the same age as the Chinese group who always live with their parents for their first 7 months. Their parents must use Standard Japanese at the homes.

·        Test the location (and size?) of A1 area for each individual in both groups with MEG instrument.

·        Make some statistical calculation to determine the average data for each group.

·        Compare the data between these two groups. The difference of the data should be caused by the early speech perception.

I have to correct my statements in the previous posters – the early critical period of speech perception should be 6~7 months, not 3 months. My memory was not accurate enough.

[此帖子已被 thinker_jeff 在 2005-11-23 22:34:49 编辑过]

thinker_jeff 发表于 2005-11-17 21:20:00 | 显示全部楼层
引用
原文由 zhixl 发表于 2005-11-17 15:17:52 :

发了,接到后告诉我


I've got it. Thank you so much!
thinker_jeff 发表于 2005-11-25 11:33:00 | 显示全部楼层

Bobking and xneuron,fficeffice" />

Could you help us for designing some experiment in this topic?

 

bobking 发表于 2005-11-26 02:56:00 | 显示全部楼层

Sorry, Xneuron and me are both in the Vision Research Lab. My background of  auditory system is poor, So I am not able to design some experiments about auditory experiments. But your discussion is very interesting.

Here is some my opinion about this discussion,

1, the plasticity of primary cortex, I think the plasticity exists through the animal's life, Eespecially about primary auditory cortex. I have read a paper about perceptual learning about frequency discrimination on Cat. And they find the tonotopic organization is altered because of trainig. Although we still do not find the effect on V1 about visual task trainning in adult animal, some report that perceptual learning alters the V4's neuron's response.

2. The different language brings the different organization of primary auditory cortex. I think it will be a very interesting topic. Maybe this point is not  right, but I am confident that the different language will bring differnce in the brain's area for voice or for language.

 

[此帖子已被 bobking 在 2005-11-26 3:01:11 编辑过]

bobking 发表于 2005-11-26 03:00:00 | 显示全部楼层
引用
原文由 zhixl 发表于 2005-11-22 23:35:37 :

初级视觉皮质定位的个体差异也很强,thinker_jeff想没想过怎么解释


Do you have some paper to support this idea?
 楼主| zhixl 发表于 2005-10-30 07:54:00 | 显示全部楼层 |阅读模式

听觉处理不象视觉处理那样被广泛研究,重要的原因之一是它不大好研究(呵呵,废话)。

比如eeg就比较难应用于听觉皮质处理研究,是因为primary auditory cortex (A1)和part of second auditory cortex (A2)卷到 temporal cortex里面去了,A1和A2形成的电场方向和scalp接近平行,不容易被测量到。

人类的听觉系统可以处理语言,而且语言是人类特有的功能。这就使的对人类听觉皮质处理的研究很难参考其它灵长类的侵入研究结果,特别是上行到联合皮质之后的听觉处理。


[系统提示]:
  .::本帖子因为[奖励]为本论坛提出了好的建议被神经科学论坛管理员a2s2d3实行了:+5金钱 +5经验 的奖惩::.
[系统提示]:
  .::本帖子因为再支持一下!被神经科学论坛管理员a2s2d3实行了:+20金钱 +20经验 的奖惩::.
石悲 发表于 2005-11-13 20:00:00 | 显示全部楼层

看两位网友的讨论,很有兴趣。

上面那个例子是完全可能的结果。做这样的实验,可能要对其它杂音有屏蔽,突出所给的刺激频率,结果就象肓人的视觉皮质没有萎缩,但起的不是视觉功能一样。但要在正常生活环境中的人,找出初级听觉皮质因语言差别而产生差异,可能做课题的风险较大。

另外,初级皮质可能不仅仅是个触发结构,应该有对对象的整体化感觉的作用。

thinker_jeff 发表于 2005-11-14 23:27:00 | 显示全部楼层

引用 fficeffice" />


原文由 zhixl 发表于 2005-11-14 16:36:22 :

我没有检索到全文.

要是有feedback top-down的研究结果就好了.

_________________________________________________________________

Here is an article on Nature Reviews in April 2004. This review covered the findings in the previous abstract. It seems they are thinking the auditory conditioned stimulus (CS) is the key for this plasticity, not “top-down” or “feedback”.

 

I found this through Google Search and may need time to digest it by myself. Please let me know your comments.

 

SPECIFIC LONG-TERM MEMORY TRACES IN PRIMARY AUDITORY CORTEX

http://128.200.122.84/weinberger/publications/Weinberger,%202004b.pdf

[此帖子已被 thinker_jeff 在 2005-11-15 0:35:26 编辑过]

 楼主| zhixl 发表于 2005-11-15 12:44:00 | 显示全部楼层
引用
原文由 thinker_jeff 发表于 2005-11-14 23:27:03 :

Here is an article on Nature Reviews in April 2004. This review covered the findings in the previous abstract. It seems they are thinking the auditory conditioned stimulus (CS) is the key for this plasticity, not “top-down” or “feedback”.fficeffice" />

 

I found this through Google Search and may need time to digest it by myself. Please let me know your comments.

 

SPECIFIC LONG-TERM MEMORY TRACES IN PRIMARY AUDITORY CORTEX

http://128.200.122.84/weinberger/publications/Weinberger,%202004b.pdf

[此帖子已被 thinker_jeff 在 2005-11-15 0:35:26 编辑过]


很好的文章,我要花些时间仔细的阅读.向你也推荐一篇文章

Subdivisions of auditory cortex and ipsilateral cortical connections of the parabelt auditory cortex in macaque monkey

http://www3.interscience.wiley.com/cgi-bin/fulltext/31454/PDFSTART

不知道这个连接是否要IP认证,如果你打不开,告诉我.

您需要登录后才可以回帖 登录 | 注册

本版积分规则

小黑屋|手机版|Archiver|生物行[生物导航网] ( 沪ICP备05001519号 )

GMT+8, 2024-3-29 21:21 , Processed in 0.040198 second(s), 15 queries .

Powered by Discuz! X3.4

© 2001-2023 Discuz! Team.

快速回复 返回顶部 返回列表