Limits...
Stable modality-specific activity flows as reflected by the neuroenergetic approach to the FMRI weighted maps.

Strelnikov K, Barone P - PLoS ONE (2012)

Bottom Line: The sources, from which activity spreads in the brain during face processing, were detected in the occipital cortex.For auditory word processing, the sources of activity flows were detected bilaterally in the middle superior temporal regions, they were also detected in the left posterior superior temporal cortex.Thus, neuroenergetic assumptions may give a novel perspective for the analysis of neuroimaging data.

View Article: PubMed Central - PubMed

Affiliation: Hopital Purpan, Toulouse, France. kuzma@cerco.ups-tlse.fr

ABSTRACT
This article uses the ideas of neuroenergetic and neural field theories to detect stimulation-driven energy flows in the brain during face and auditory word processing. In this analysis, energy flows are thought to create the stable gradients of the fMRI weighted summary images. The sources, from which activity spreads in the brain during face processing, were detected in the occipital cortex. The following direction of energy flows in the frontal cortex was described: the right inferior frontal = >the left inferior frontal = >the triangular part of the left inferior frontal cortex = >the left operculum. In the left operculum, a localized circuit was described. For auditory word processing, the sources of activity flows were detected bilaterally in the middle superior temporal regions, they were also detected in the left posterior superior temporal cortex. Thus, neuroenergetic assumptions may give a novel perspective for the analysis of neuroimaging data.

Show MeSH

Related in: MedlinePlus

Divergence (sources) of the gradient vectors for face and word processing.(A) Sources for face processing in the occipital cortex. (B) Sources for auditory word processing in the superior temporal cortex.
© Copyright Policy
Related In: Results  -  Collection


getmorefigures.php?uid=PMC3303838&req=5

pone-0033462-g002: Divergence (sources) of the gradient vectors for face and word processing.(A) Sources for face processing in the occipital cortex. (B) Sources for auditory word processing in the superior temporal cortex.

Mentions: The divergence analysis corresponds to the sources of energy flows, i.e. regions with the net flow of energy outside of the region. Divergence for face processing was positive in the right superior frontal region, in the left postcentral region, in the right middle occipital and in the fusiform regions bilaterally, in the left calcarine and right lingual regions (Table 2, Figure 2A). Negative divergence (convergence) for face processing was observed in the left thalamus and middle cingulum, in the left superior frontal and left postcentral regions, and bilaterally in the orbital parts of the frontal cortex (Table 2).


Stable modality-specific activity flows as reflected by the neuroenergetic approach to the FMRI weighted maps.

Strelnikov K, Barone P - PLoS ONE (2012)

Divergence (sources) of the gradient vectors for face and word processing.(A) Sources for face processing in the occipital cortex. (B) Sources for auditory word processing in the superior temporal cortex.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3303838&req=5

pone-0033462-g002: Divergence (sources) of the gradient vectors for face and word processing.(A) Sources for face processing in the occipital cortex. (B) Sources for auditory word processing in the superior temporal cortex.
Mentions: The divergence analysis corresponds to the sources of energy flows, i.e. regions with the net flow of energy outside of the region. Divergence for face processing was positive in the right superior frontal region, in the left postcentral region, in the right middle occipital and in the fusiform regions bilaterally, in the left calcarine and right lingual regions (Table 2, Figure 2A). Negative divergence (convergence) for face processing was observed in the left thalamus and middle cingulum, in the left superior frontal and left postcentral regions, and bilaterally in the orbital parts of the frontal cortex (Table 2).

Bottom Line: The sources, from which activity spreads in the brain during face processing, were detected in the occipital cortex.For auditory word processing, the sources of activity flows were detected bilaterally in the middle superior temporal regions, they were also detected in the left posterior superior temporal cortex.Thus, neuroenergetic assumptions may give a novel perspective for the analysis of neuroimaging data.

View Article: PubMed Central - PubMed

Affiliation: Hopital Purpan, Toulouse, France. kuzma@cerco.ups-tlse.fr

ABSTRACT
This article uses the ideas of neuroenergetic and neural field theories to detect stimulation-driven energy flows in the brain during face and auditory word processing. In this analysis, energy flows are thought to create the stable gradients of the fMRI weighted summary images. The sources, from which activity spreads in the brain during face processing, were detected in the occipital cortex. The following direction of energy flows in the frontal cortex was described: the right inferior frontal = >the left inferior frontal = >the triangular part of the left inferior frontal cortex = >the left operculum. In the left operculum, a localized circuit was described. For auditory word processing, the sources of activity flows were detected bilaterally in the middle superior temporal regions, they were also detected in the left posterior superior temporal cortex. Thus, neuroenergetic assumptions may give a novel perspective for the analysis of neuroimaging data.

Show MeSH
Related in: MedlinePlus