» Articles » PMID: 18068690

Developmental Increases in Effective Connectivity to Brain Regions Involved in Phonological Processing During Tasks with Orthographic Demands

Overview
Journal Brain Res
Specialty Neurology
Date 2007 Dec 11
PMID 18068690
Citations 30
Authors
Affiliations
Soon will be listed here.
Abstract

Developmental differences (9- to 15-year-olds) in effective connectivity in left hemisphere regions were examined using dynamic causal modeling (DCM) of functional magnetic resonance imaging (fMRI) data. Children completed spelling tasks in the visual and auditory modalities in which they were asked to determine if two words were spelled the same from the first vowel onwards. Intrinsic (anatomical) connections were strongest from primary cortical regions to unimodal association areas - from Heschl's gyrus to superior temporal gyrus for the auditory spelling task and from calcarine to fusiform gyrus for the visual spelling task. The modulatory (experimental) effect for the visual spelling task from calcarine to superior temporal gyrus was stronger than all other effects from calcarine and this effect showed a developmental increase, suggesting automatic activation of phonology that increased with age. The modulatory effect from Heschl's gyrus to dorsal inferior frontal gyrus also showed a developmental increase, suggesting age-related increases in phonological segmentation in verbal working memory. All together, these results suggest that there are developmental increases in automatic access into brain regions involved in phonological processing in tasks that require orthographic processing.

Citing Articles

Duplicated Heschl's gyrus associations with phonological decoding.

Eckert M Brain Struct Funct. 2024; 229(9):2137-2147.

PMID: 39012481 PMC: 11612011. DOI: 10.1007/s00429-024-02831-2.


Visual cortex anodal transcranial direct current stimulation does not alter reading performance for Chinese presented character-by-character to normal peripheral vision in older adults.

Lyu A, Silva A, Thompson B, Abel L, Cheong A Front Neurosci. 2024; 18:1341307.

PMID: 38721051 PMC: 11076872. DOI: 10.3389/fnins.2024.1341307.


Cross-Sectional Investigation of Brain Volume in Dyslexia.

Ligges C, Ligges M, Gaser C Front Neurol. 2022; 13:847919.

PMID: 35350399 PMC: 8957969. DOI: 10.3389/fneur.2022.847919.


Emergent Neuroimaging Findings for Written Expression in Children: A Scoping Review.

Costa L, Spencer S, Hooper S Brain Sci. 2022; 12(3).

PMID: 35326361 PMC: 8945939. DOI: 10.3390/brainsci12030406.


Neural Mechanisms of Dorsal and Ventral Visual Regions during Text Reading.

Zhou W, Wang X, Xia Z, Bi Y, Li P, Shu H Front Psychol. 2016; 7:1399.

PMID: 27695434 PMC: 5023685. DOI: 10.3389/fpsyg.2016.01399.


References
1.
Booth J, Burman D, Meyer J, Gitelman D, Parrish T, Marsel Mesulam M . Development of brain mechanisms for processing orthographic and phonologic representations. J Cogn Neurosci. 2004; 16(7):1234-49. PMC: 1382289. DOI: 10.1162/0898929041920496. View

2.
Berl M, Vaidya C, Davis Gaillard W . Functional imaging of developmental and adaptive changes in neurocognition. Neuroimage. 2005; 30(3):679-91. DOI: 10.1016/j.neuroimage.2005.10.007. View

3.
HUTTENLOCHER P, Dabholkar A . Regional differences in synaptogenesis in human cerebral cortex. J Comp Neurol. 1997; 387(2):167-78. DOI: 10.1002/(sici)1096-9861(19971020)387:2<167::aid-cne1>3.0.co;2-z. View

4.
Woodward T, Cairo T, Ruff C, Takane Y, Hunter M, Ngan E . Functional connectivity reveals load dependent neural systems underlying encoding and maintenance in verbal working memory. Neuroscience. 2005; 139(1):317-25. DOI: 10.1016/j.neuroscience.2005.05.043. View

5.
Poldrack R, Wagner A, Prull M, Desmond J, Glover G, Gabrieli J . Functional specialization for semantic and phonological processing in the left inferior prefrontal cortex. Neuroimage. 1999; 10(1):15-35. DOI: 10.1006/nimg.1999.0441. View