| Title |
Action semantics and movement characteristics engage distinct processing streams during the observation of tool use
|
|---|---|
| Published in |
Experimental Brain Research, June 2013
|
| DOI | 10.1007/s00221-013-3610-5 |
| Pubmed ID | |
| Authors |
Markus Hoeren, Christoph P. Kaller, Volkmar Glauche, Magnus-Sebastian Vry, Michel Rijntjes, Farsin Hamzei, Cornelius Weiller |
| Abstract |
The cortical motor system follows a modular organization in which different features of executed movements are supported by distinct streams. Accordingly, different levels of action recognition, such as movement characteristics or action semantics may be processed within distinct networks. The present study aimed to differentiate areas related to the analysis of action features involving semantic knowledge from regions concerned with the evaluation of movement characteristics determined by structural object properties. To this end, the assessment of (i) tool-associated actions in relation to semantically, but not functionally inappropriate recipients (factor "Semantics"), and the evaluation of (ii) tool-associated movements performed with awkward versus correct hand postures (factor "Hand") were experimentally manipulated in an fMRI study with an event-related 2 × 2 factorial design. The videos used as stimuli displayed actions performed with the right hand in third-person perspective. Conjunction analysis of all four experimental conditions showed that observing videos depicting tool-related actions compared to rest was associated with widespread bilateral activity within the frontal lobes, inferior and superior parietal lobules, parts of the temporal lobes, as well as the occipital lobes. Viewing actions executed with incorrect compared to correct hand postures (factor "Hand") elicited significantly more activity within right primary sensory cortex (Brodmann area 2) and superior parietal lobule. Conversely, tool-associated actions displayed after semantically incorrect compared to correct recipients elicited higher activation within a left-lateralized network comprising the ventro-lateral prefrontal cortex (VLPFC), parts of the intraparietal sulcus and the angular gyrus (AG), as well as the supplementary motor area (SMA) and pre-SMA. Probabilistic diffusion tensor imaging-based tractography revealed two distinct fiber connections between AG and the frontal activation: A dorsal pathway via the superior longitudinal fascicle to the caudal part of VLPFC and a ventral pathway reaching the more rostral parts of VLPFC via the extreme capsule. The task-dependent relative modulation of activity within these brain networks composed of activated cortical areas connected by specific white matter tracts may indicate that the assessment of semantic action features relies on both dorso-ventral and ventral processing streams, whereas the analysis of hand postures with respect to objects depends on areas within the dorso-dorsal stream. |
X Demographics
The data shown below were collected from the profile of 1 X user who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 103 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Germany | 3 | 3% |
| Italy | 1 | <1% |
| Israel | 1 | <1% |
| Canada | 1 | <1% |
| United States | 1 | <1% |
| Unknown | 96 | 93% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 21 | 20% |
| Researcher | 21 | 20% |
| Student > Master | 11 | 11% |
| Professor > Associate Professor | 7 | 7% |
| Professor | 7 | 7% |
| Other | 22 | 21% |
| Unknown | 14 | 14% |
| Readers by discipline | Count | As % |
|---|---|---|
| Psychology | 33 | 32% |
| Neuroscience | 16 | 16% |
| Medicine and Dentistry | 8 | 8% |
| Engineering | 4 | 4% |
| Linguistics | 4 | 4% |
| Other | 12 | 12% |
| Unknown | 26 | 25% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 17 July 2013.
All research outputs
#18,347,414
of 22,721,584 outputs
Outputs from Experimental Brain Research
#2,472
of 3,217 outputs
Outputs of similar age
#146,873
of 195,465 outputs
Outputs of similar age from Experimental Brain Research
#26
of 42 outputs
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