Language-specific activations in the brain: evidence from inflectional processing in bilinguals

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Paper (help)
Language-specific activations in the brain: evidence from inflectional processing in bilinguals
Authors: Minna Lehtonen, Victor Vorobyev, Anna Soveri, Kenneth Hugdahl, Terhi Tuokkola, Matti Laine
Citation: Journal of Neurolinguistics 22 : 495. 2009
Database(s):
DOI: 10.1016/j.neuroling.2009.05.001.
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Extract:

Language-specific activations in the brain: evidence from inflectional processing in bilinguals resports a functional magnetic resonance imaging study on inflectional processing in the Swedish and Finnish languages.

Contents

[edit] Subjects

Subject group #1 (help)
Bilingual university students
Subjects/♂/♀: 16 / 8 / 8
Age: 26.3 ±3.42 (–)
Handedness: Right
Nationality: define nationality
Approval: Joint Ethical Committee of the Turku University Central Hospital and the University of Turku
Databases:

Group 1 of 16 right-handed bilingual university students with 8 males and 8 females were included in the study. The group had a mean age of 26.3. The study on the human subjects was approved by the Joint Ethical Committee of the Turku University Central Hospital and the University of Turku.

[edit] Scanning

MRI Scanning (help)
Mode: fMRI
Scanner: Gyroscan Intera 1.5T
Type: T2*-weighted Single-shot echo-planar

(TR=3000ms, TE=50ms, FA=90°)

Slices: 30 (thickness=4mm , gap=0.4mm) oriented Axial
Size: FOV=192mm matrix=64 x 64
Laboratory: PET Centre, University of Turku

For fMRI T2*-weighted Single-shot echo-planar scans were acquired with a 1.5T  at PET Centre, University of Turku.


[edit] Results

The brain scans was analyzed with SPM2 and spatially normalized to MNI space (Brett's transformations was used at some point, but the coordinates are probably reported in MNI space). A corrected threshold on P<0.05 (cluster/peak combined) obtained with the SnPM toolbox was applied.

[edit] Lexical decision with inflected Finnish words versus Swedish words

5 coordinates in Table 2, part 1.

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1 Left inferior frontal gyrus 44 -54 12 27 Brede Database Brede Wiki NeuroSynth SumsDB Not available
2 Left inferior frontal gyrus 44 -57 9 15 Brede Database Brede Wiki NeuroSynth SumsDB Not available
3 Left precentral sulcus 6/44 -48 0 36 Brede Database Brede Wiki NeuroSynth SumsDB Not available
4 Left inferior occipital gyrus 18 -33 -90 -12 Brede Database Brede Wiki NeuroSynth SumsDB Not available
5 Left fusiform gyrus 19 -36 -75 -21 Brede Database Brede Wiki NeuroSynth SumsDB Not available
Entry not completed (help)

[edit] Lexical decision with inflection in Finnish versus non-inflected words

1 coordinate in Table 2, part 2

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1 Left inferior frontal gyrus 44 -51 9 24 Brede Database Brede Wiki NeuroSynth SumsDB Not available
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[edit] Critique

  1. The authors write that "there were no statisticant significant differences between languages" (the skill of the subjects wrt. Swedish and Finnish). However, their two test shows p-values on 0.058 and 0.07, — just above norminal 0.05.
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