Über Windungsrelief, Maße und Rindenarchitektonik der Supratemporalfläche, ihre individuellen und ihre Seitenunterschiede

Economo, C. v.; Horn, Lucas Guimarães Rechatiko

doi:10.1007/bf02865945

Cited by 222 publications

(156 citation statements)

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“…Sound vs. baseline and local MSP maxima were found mostly within the architectonically identified auditory areas by Rivier and Clarke (1997) and Wallace et al (2002) and partially outside them. A comparison with the classical cytoarchitectonic maps of von Economo and Horn (1930) indicates that sound vs. baseline activated areas TC, TD, the different subdivisions of TB as well as parts of areas TA and TG. The local maxima form MSP activations were limited to TC, TD, TB and TAB2 (which is a transition area between TB and TA).…”

Section: Resultsmentioning

confidence: 98%

Where sound position influences sound object representations: A 7-T fMRI study

et al. 2011

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Section: Resultsmentioning

confidence: 98%

Where sound position influences sound object representations: A 7-T fMRI study

et al. 2011

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“…Comparison to architectonic measures of human PAC After a century of mapping cortical architecture (Campbell, 1905;von Economo and Koskinas, 1925;von Economo and Horn, 1930;Galaburda and Sanides, 1980;Rademacher et al, 1993;Rivier and Clarke, 1997;Clarke and Rivier, 1998;Hackett et al, 2001;Morosan et al, 2001;Wallace et al, 2002;Sweet et al, 2005;Fullerton and Pandya, 2007), it appears that human PAC is not uniform, and multiple subdivisions have been proposed. The central regions of PAC show the strongest primary (koniocortical) features.…”

Section: Measuring Tonotopy With Bold Fmrimentioning

confidence: 99%

“…The central regions of PAC show the strongest primary (koniocortical) features. von Economo and Horn (1930) noted that within PAC, the densest packing of granular cells is found on the crown of HG (referring to single gyri); and Hackett et al (2001) found that the most prominent core region fell along the SI (referring to partial duplications). Our data suggest that this region of densest cellular structure (the crown of single gyri and the SI of duplicated gyri) may correspond to the low-frequency representation at the border between hA1 and hR.…”

Section: Measuring Tonotopy With Bold Fmrimentioning

confidence: 99%

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Human Primary Auditory Cortex Follows the Shape of Heschl's Gyrus

Costa¹,

Zwaag²,

Marques³

et al. 2011

J. Neurosci.

261

294

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The primary auditory cortex (PAC) is central to human auditory abilities, yet its location in the brain remains unclear. We measured the two largest tonotopic subfields of PAC (hA1 and hR) using high-resolution functional MRI at 7 T relative to the underlying anatomy of Heschl's gyrus (HG) in 10 individual human subjects. The data reveals a clear anatomical-functional relationship that, for the first time, indicates the location of PAC across the range of common morphological variants of HG (single gyri, partial duplications, and complete duplications). In 20/20 individual hemispheres, two primary mirror-symmetric tonotopic maps were clearly observed with gradients perpendicular to HG. PAC spanned both divisions of HG in cases of partial and complete duplications (11/20 hemispheres), not only the anterior division as commonly assumed. Specifically, the central union of the two primary maps (the hA1-R border) was consistently centered on the full Heschl's structure: on the gyral crown of single HGs and within the sulcal divide of duplicated HGs. The anatomicalfunctional variants of PAC appear to be part of a continuum, rather than distinct subtypes. These findings significantly revise HG as a marker for human PAC and suggest that tonotopic maps may have shaped HG during human evolution. Tonotopic mappings were based on only 16 min of fMRI data acquisition, so these methods can be used as an initial mapping step in future experiments designed to probe the function of specific auditory fields.

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“…It is known that speech recognition critically depends on specialized cortical regions, including auditory areas as well as language areas (Geschwind, 1979). While cytoarchitectonic studies have identified multiple auditory areas (Brodmann, 1909;von Economo and Horn, 1930;Galaburda and Sanides, 1980;Rivier and Clarke, 1997), roles of these multiple areas in auditory analysis per se have yet to be elucidated. Using recently developed imaging techniques, differential cortical responses to speech stimuli could reveal functional differentiation in the auditory cortex.…”

Section: Introductionmentioning

confidence: 99%

Functional Differentiation in the Human Auditory and Language Areas Revealed by a Dichotic Listening Task

et al. 2000

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The human auditory cortex plays a special role in speech recognition. It is therefore necessary to clarify the functional roles of individual auditory areas. We applied functional magnetic resonance imaging (fMRI) to examine cortical responses to speech sounds, which were presented under the dichotic and diotic (binaural) listening conditions. We found two different response patterns in multiple auditory areas and language-related areas. In the auditory cortex, the medial portion of the secondary auditory area (A2), as well as a part of the planum temporale (PT) and the superior temporal gyrus and sulcus (ST), showed greater responses under the dichotic condition than under the diotic condition. This dichotic selectivity may reflect acoustic differences and attention-related factors such as spatial attention and selective attention to targets. In contrast, other parts of the auditory cortex showed comparable responses to the dichotic and diotic conditions. We found similar functional differentiation in the inferior frontal (IF) cortex. These results suggest that multiple auditory and language areas may play a pivotal role in integrating the functional differentiation for speech recognition.

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Über Windungsrelief, Maße und Rindenarchitektonik der Supratemporalfläche, ihre individuellen und ihre Seitenunterschiede

Cited by 222 publications

References 0 publications

Where sound position influences sound object representations: A 7-T fMRI study

Where sound position influences sound object representations: A 7-T fMRI study

Human Primary Auditory Cortex Follows the Shape of Heschl's Gyrus

Functional Differentiation in the Human Auditory and Language Areas Revealed by a Dichotic Listening Task

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