FMRI of phonemic perception and its relationship to reading development in elementary- to middle-school-age children.
FMRI of phonemic perception and its relationship to reading development in elementary- to middle-school-age children.
复制标题
语音感知及其与中学和中学儿童中阅读发展的关系。
DOI：
10.1016/j.neuroimage.2013.11.055
复制
发表时间：
2014-04-01
期刊：
影响因子：
5.7
通讯作者：
Binder JR
中科院分区：
文献类型：
--
作者：
Conant LL;Liebenthal E;Desai A;Binder JR
神经影像学研究表明，成人语音音素的分类知觉主要是通过从双侧初级听觉区到左侧中上上级颞叶皮层联想区的通路来实现的，但儿童分类语音知觉的神经基础尚不清楚。本研究采用功能磁共振成像技术（fMRI）对7 ~ 12岁儿童与音素知觉相关的神经基质进行了研究，并探讨了音素知觉的专业水平、相关激活与阅读和语音加工能力发展之间的关系。虽然左额叶，颞叶和顶叶皮层的多个区域被发现是更敏感的音素比nonphonemic的声音，左偏侧化的程度在后颞叶和顶叶区域在音素相对于nonphonemic歧视不同的分类音素感知的程度。此外，一个意想不到的发现是，熟练的分类知觉是密切相关的激活左侧腹侧枕颞叶皮层，一个地区经常与正字法处理。此外，在类别知觉熟练程度较低的儿童中，类别知觉水平与阅读能力呈正相关，阅读和阅读相关能力与右中颞激活呈负相关。这些结果表明，更专业化的左半球颞叶和顶叶区域的音素的分类感知，以及激活的区域被称为视觉词形区，可能是重要的音素感知和阅读能力的最佳发展完善。
Neuroimaging studies suggest that categorical perception of speech phonemes in adults is primarily subserved by a pathway from bilateral primary auditory areas to association areas in the left middle superior temporal cortex, but the neural substrates underlying categorical speech perception in children are not yet known. Here, fMRI was used to examine the neural substrates associated with phoneme perception in 7- to 12-year-old children as well as the relationships among level of expertise in phoneme perception, the associated activation, and the development of reading and phonological processing abilities. While multiple regions in left frontal, temporal, and parietal cortex were found to be more responsive to phonemic than nonphonemic sounds, the extent of left lateralization in posterior temporal and parietal regions during phonemic relative to nonphonemic discrimination differed depending on the degree of categorical phoneme perception. In addition, an unexpected finding was that proficiency in categorical perception was strongly related to activation in the left ventral occipitotemporal cortex, an area frequently associated with orthographic processing. Furthermore, in children who showed lower proficiency in categorical perception, the level of categorical perception was positively correlated with reading ability and reading and reading-related abilities were inversely correlated with right mid-temporal activation in the phonemic relative to nonphonemic perception contrast. These results suggest that greater specialization of left hemisphere temporal and parietal regions for the categorical perception of phonemes, as well as activation of the region termed the visual word form area, may be important for the optimal developmental refinement of both phoneme perception and reading ability.
登录
查看更多内容
影响因子：
2.6
作者：
Bogliotti, C.;Serniclaes, W.;Sprenger-CharolleS, L.
通讯作者：
Sprenger-CharolleS, L.
影响因子：
5.7
作者：
Dehaene-Lambertz, G;Pallier, C;Dehaene, S
通讯作者：
Dehaene, S
影响因子：
3.2
作者：
Desai R;Liebenthal E;Waldron E;Binder JR
通讯作者：
Binder JR
影响因子：
2.6
作者：
Chiappe, P;Chiappe, DL;Siegel, LS
通讯作者：
Siegel, LS
影响因子：
14.5
作者：
BINDER, JR;MOHR, JP
通讯作者：
MOHR, JP