Body-specific motor imagery of hand actions: neural evidence from right- and left-handers

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Paper (help)
Body-specific motor imagery of hand actions: neural evidence from right- and left-handers
Authors: Roel M. Willems, Ivan Toni, Peter Hagoort, Daniel Casasanto
Citation: Frontiers in Human Neuroscience 3 : 39. 2009
Database(s): PubMed (PMID/19949484)
DOI: 10.3389/neuro.09/039.2009.
Link(s): http://frontiersin.org/humanneuroscience/paper/10.3389/neuro.09/039.2009/
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Body-specific motor imagery of hand actions: neural evidence from right- and left-handers reports a functional magnetic resonance imaging study on motor imagery on left-handers and right-handers.

Contents

[edit] Abstract from open access paper

If motor imagery uses neural structures involved in action execution, then the neural correlates of imagining an action should differ between individuals who tend to execute the action differently. Here we report fMRI data showing that motor imagery is influenced by the way people habitually perform motor actions with their particular bodies; that is, motor imagery is ‘body-specific’ (Casasanto, 2009). During mental imagery for complex hand actions, activation of cortical areas involved in motor planning and execution was left-lateralized in right-handers but right-lateralized in left-handers. We conclude that motor imagery involves the generation of an action plan that is grounded in the participant’s motor habits, not just an abstract representation at the level of the action’s goal. People with different patterns of motor experience form correspondingly different neurocognitive representations of imagined actions.

[edit] Subjects

Subject group #1 (help)
Left-handed
Subjects/♂/♀: 16 / 4 / 12
Age: 23.4 (19–32)
Handedness: Left
Nationality: Dutch
Approval: Local ethics committee
Databases:

Group 1 of 16 left-handed left-handed with 4 males and 12 females were included in the study. The Dutch group had a mean age of 23.4 with a range from 19 to 32.

The study on the human subjects was approved by the Local ethics committee.
Subject group #2 (help)
Right-handed
Subjects/♂/♀: 16 / 6 / 10
Age: 23.2 (20–29)
Nationality: Dutch
Approval: Local ethics committee
Databases:

Group 2 of 16 right-handed with 6 males and 10 females were included in the study. The Dutch group had a mean age of 23.2 with a range from 20 to 29. The study on the human subjects was approved by the Local ethics committee.

[edit] Scanning

MRI Scanning (help)
Mode: fMRI
Scanner: Siemens 3TT
Type: EPI

(TR=2060ms, TE=30ms, FA=85°)

Slices: 31
Size: resolution=3.5 x 3.5 x 3mm
Laboratory: missing laboratory

For fMRI EPI scans were acquired with a 3TT Siemens scanner..


[edit] Results

The brain scans were analyzed with SPM5 with spatial normalization to MNI space. The statistical threshold is at P<0.05 corrected on cluster extent after thresholding on P<0.005 uncorrected (see table caption)

[edit] Manual motor imagery versus non-manual

14 coordinates in Table 2

Anatomy
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1 Right dorsal precentral / middle frontal sulcus 22 -8 42 1097 Brede Database Brede Wiki NeuroSynth SumsDB Not available
2 Right dorsal precentral / middle frontal sulcus 28 -8 58 Brede Database Brede Wiki NeuroSynth SumsDB Not available
3 Right postcentral sulcus (extending into intraparietal sulcus) 38 -38 48 5724 Brede Database Brede Wiki NeuroSynth SumsDB Not available
4 Right postcentral sulcus (extending into intraparietal sulcus) 34 -46 58 Brede Database Brede Wiki NeuroSynth SumsDB Not available
5 Right inferior / middle temporal sulcus 58 -62 -2 Brede Database Brede Wiki NeuroSynth SumsDB Not available
6 Right inferior / middle temporal sulcus 48 -52 -12 Brede Database Brede Wiki NeuroSynth SumsDB Not available
7 Right thalamus 16 -28 -8 Brede Database Brede Wiki NeuroSynth SumsDB Not available
8 Left dorsal precentral / middle frontal sulcus -24 -12 52 772 Brede Database Brede Wiki NeuroSynth SumsDB Not available
9 Left dorsal precentral / middle frontal sulcus -24 -2 68 Brede Database Brede Wiki NeuroSynth SumsDB Not available
10 Left postcentral sulcus (extending into intraparietal sulcus) -38 -38 44 716 Brede Database Brede Wiki NeuroSynth SumsDB Not available
11 Left postcentral sulcus (extending into intraparietal sulcus) -16 -64 52 Brede Database Brede Wiki NeuroSynth SumsDB Not available
12 Left inferior / middle temporal sulcus -54 -64 4 1292 Brede Database Brede Wiki NeuroSynth SumsDB Not available
13 Left thalamus -14 -30 4 Brede Database Brede Wiki NeuroSynth SumsDB Not available
14 Left fusiform gyrus -38 -26 -18 Brede Database Brede Wiki NeuroSynth SumsDB Not available

[edit] Manual motor imagery versus non-manual in left-handers

12 coordinates in Table 3, part 1.

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Entry not completed (help)

[edit] Manual motor imagery versus non-manual in right-handers

10 coordinates in Table 3, part 2.

Anatomy
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Entry not completed (help)
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