Experience-dependent overrepresentation of ultrasonic vocalization frequencies in the rat primary auditory cortex.
Experience-dependent overrepresentation of ultrasonic vocalization frequencies in the rat primary auditory cortex.
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大鼠初级听觉皮层中超声波发声频率的经验依赖性过度表征。
DOI：
10.1152/jn.00230.2013
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发表时间：
2013
影响因子：
2.5
通讯作者：
Bao,Shaowen
中科院分区：
文献类型：
--
作者：
Kim,Heesoo;Bao,Shaowen
Cortical sensory representation is highly adaptive to the environment, and prevalent or behaviorally important stimuli are often overrepresented. One class of such stimuli is species-specific vocalizations. Rats vocalize in the ultrasonic range >30 kHz, but cortical representation of this frequency range has not been systematically examined. We recorded in vivo cortical electrophysiological responses to ultrasonic pure-tone pips, natural ultrasonic vocalizations, and pitch-shifted vocalizations to assess how rats represent this ethologically relevant frequency range. We find that nearly 40% of the primary auditory cortex (AI) represents an octave-wide band of ultrasonic vocalization frequencies (UVFs; 32–64 kHz) compared with <20% for other octave bands <32 kHz. These UVF neurons respond preferentially and reliably to ultrasonic vocalizations. The UVF overrepresentation matures in the cortex before it develops in the central nucleus of inferior colliculus, suggesting a cortical origin and corticofugal influences. Furthermore, the development of cortical UVF overrepresentation depends on early acoustic experience. These results indicate that natural sensory experience causes large-scale cortical map reorganization and improves representations of species-specific vocalizations.
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啮齿动物听觉皮层的组织：PHA-L 从 MGv 顺行运输到颞叶新皮层。
DOI：
10.1093/cercor/3.6.499
发表时间：
1993
期刊：
Cerebral cortex (New York, N.Y. : 1991)
影响因子：
--
作者：
Romanski,LM;LeDoux,JE
通讯作者：
LeDoux,JE
DOI：
10.1073/pnas.0508239102
发表时间：
2005-11-08
影响因子：
11.1
作者：
Chang, EF;Bao, SW;Merzenich, MM
通讯作者：
Merzenich, MM
影响因子：
3.7
作者：
Takahashi N;Kashino M;Hironaka N
通讯作者：
Hironaka N
影响因子：
2.4
作者：
Liu, RC;Miller, KD;Schreiner, CE
通讯作者：
Schreiner, CE
DOI：
10.1073/pnas.95.21.12663
发表时间：
1998-10-13
影响因子：
11.1
作者：
Gao, E;Suga, N
通讯作者：
Suga, N