scholarly journals Heschl gyrus and its included primary auditory cortex: Structural MRI studies in healthy and diseased subjects

2008 ◽  
Vol 28 (2) ◽  
pp. 287-299 ◽  
Author(s):  
Ihssan A. Abdul-Kareem ◽  
Vanessa Sluming
Keyword(s):  
Auditory Cortex ◽  
Primary Auditory Cortex ◽  
Structural Mri ◽  
Mri Studies ◽  
Heschl Gyrus

scholarly journals Localizing the human primary auditory cortex in vivo using structural MRI

NeuroImage ◽  
2014 ◽  
Vol 93 ◽  
pp. 237-251 ◽  
Author(s):  
Christian Wasserthal ◽  
André Brechmann ◽  
Jörg Stadler ◽  
Bruce Fischl ◽  
Karin Engel
Keyword(s):  
Auditory Cortex ◽  
Primary Auditory Cortex ◽  
Structural Mri

Deep Brain Stimulation of Heschl Gyrus

Neurosurgery ◽  
2015 ◽  
Vol 77 (6) ◽  
pp. 940-947 ◽  
Author(s):  
Chris Donovan ◽  
Jennifer Sweet ◽  
Matthew Eccher ◽  
Cliff Megerian ◽  
Maroun Semaan ◽  
...  
Keyword(s):  
Deep Brain Stimulation ◽  
Auditory Cortex ◽  
Evoked Potentials ◽  
Brain Stimulation ◽  
Primary Auditory Cortex ◽  
Electrode Implantation ◽  
Considerable Morbidity ◽  
Heschl Gyrus ◽  
Deep Brain ◽  
Stimulation Of

BACKGROUND: Tinnitus is a source of considerable morbidity, and neuromodulation has been shown to be a potential treatment option. However, the location of the primary auditory cortex within Heschl gyrus in the temporal operculum presents challenges for targeting and electrode implantation. OBJECTIVE: To determine whether anatomic targeting with intraoperative verification using evoked potentials can be used to implant electrodes directly into the Heschl gyrus (HG). METHODS: Nine patients undergoing stereo-electroencephalogram evaluation for epilepsy were enrolled. HG was directly targeted on volumetric magnetic resonance imaging, and framed stereotaxy was used to implant an electrode parallel to the axis of the gyrus by using an oblique anterolateral-posteromedial trajectory. Intraoperative evoked potentials from auditory stimuli were recorded from multiple electrode contacts. Postoperatively, stimulation of each electrode was performed and participants were asked to describe the percept. Audiometric analysis was performed for 2 participants during subthreshold stimulation. RESULTS: Sounds presented to the contralateral and ipsilateral ears produced evoked potentials in HG electrodes in all participants intraoperatively. Stimulation produced a reproducible sensation of sound in all participants with perceived volume proportional to amplitude. Four participants reported distinct sounds when different electrodes were stimulated, with more medial contacts producing tones perceived as higher in pitch. Stimulation was not associated with adverse audiometric effects. There were no complications of electrode implantation. CONCLUSION: Direct anatomic targeting with physiological verification can be used to implant electrodes directly into primary auditory cortex. If deep brain stimulation proves effective for intractable tinnitus, this technique may be useful to assist with electrode implantation.

Intensity Tuning of Neurons in The Primary Auditory Cortex of Albino Mouse

2013 ◽  
Vol 40 (4) ◽  
pp. 365
Author(s):  
Qiao-Zhen QI ◽  
Wen-Juan SI ◽  
Feng LUO ◽  
Xin WANG
Keyword(s):  
Auditory Cortex ◽  
Primary Auditory Cortex

Influence of Primary Auditory Cortex in the Characterization of Autism Spectrum in Young Adults using Brain Connectivity Parameters and Deep Belief Networks: An fMRI Study

2020 ◽  
Vol 16 (9) ◽  
pp. 1059-1073
Author(s):  
Vidhusha Srinivasan ◽  
N. Udayakumar ◽  
Kavitha Anandan
Keyword(s):  
Functional Connectivity ◽  
Auditory Cortex ◽  
Language Processing ◽  
Brain Connectivity ◽  
Primary Auditory Cortex ◽  
Autism Spectrum ◽  
Belief Networks ◽  
Deep Belief Networks ◽  
High Functioning ◽  
Low Functioning

Background: The spectrum of autism encompasses High Functioning Autism (HFA) and Low Functioning Autism (LFA). Brain mapping studies have revealed that autism individuals have overlaps in brain behavioural characteristics. Generally, high functioning individuals are known to exhibit higher intelligence and better language processing abilities. However, specific mechanisms associated with their functional capabilities are still under research. Objective: This work addresses the overlapping phenomenon present in autism spectrum through functional connectivity patterns along with brain connectivity parameters and distinguishes the classes using deep belief networks. Methods: The task-based functional Magnetic Resonance Images (fMRI) of both high and low functioning autistic groups were acquired from ABIDE database, for 58 low functioning against 43 high functioning individuals while they were involved in a defined language processing task. The language processing regions of the brain, along with Default Mode Network (DMN) have been considered for the analysis. The functional connectivity maps have been plotted through graph theory procedures. Brain connectivity parameters such as Granger Causality (GC) and Phase Slope Index (PSI) have been calculated for the individual groups. These parameters have been fed to Deep Belief Networks (DBN) to classify the subjects under consideration as either LFA or HFA. Results: Results showed increased functional connectivity in high functioning subjects. It was found that the additional interaction of the Primary Auditory Cortex lying in the temporal lobe, with other regions of interest complimented their enhanced connectivity. Results were validated using DBN measuring the classification accuracy of 85.85% for high functioning and 81.71% for the low functioning group. Conclusion: Since it is known that autism involves enhanced, but imbalanced components of intelligence, the reason behind the supremacy of high functioning group in language processing and region responsible for enhanced connectivity has been recognized. Therefore, this work that suggests the effect of Primary Auditory Cortex in characterizing the dominance of language processing in high functioning young adults seems to be highly significant in discriminating different groups in autism spectrum.

scholarly journals Source identity shapes spatial preference in primary auditory cortex during active navigation

2021 ◽  
Author(s):  
Diana Amaro ◽  
Dardo N. Ferreiro ◽  
Benedikt Grothe ◽  
Michael Pecka
Keyword(s):  
Auditory Cortex ◽  
Primary Auditory Cortex ◽  
Spatial Preference

scholarly journals Neuronal figure-ground responses in primate primary auditory cortex

Cell Reports ◽  
2021 ◽  
Vol 35 (11) ◽  
pp. 109242
Author(s):  
Felix Schneider ◽  
Fabien Balezeau ◽  
Claudia Distler ◽  
Yukiko Kikuchi ◽  
Jochem van Kempen ◽  
...  
Keyword(s):  
Auditory Cortex ◽  
Primary Auditory Cortex
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