We describe a new multistep technique for three-dimensional reconstruction and analysis of the in vivo planum temporale (PT) based on the manipulation of magnetic resonance raw data obtained with a special protocol. Measurements of left and right plana confirm previous neuroanatomical descriptions of a larger left planum temporale. This method can be easily adopted, allowing anatomically valid PT measurements.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1006/brln.1994.1043 | DOI Listing |
Brain
January 2025
Department of Neurology, Medical College of Wisconsin, Milwaukee, WI 53226, USA.
Acoustic-phonetic perception refers to the ability to perceive and discriminate between speech sounds. Acquired impairment of acoustic-phonetic perception is known historically as "pure word deafness" and typically follows bilateral lesions of the cortical auditory system. The extent to which this deficit occurs after unilateral left hemisphere damage and the critical left hemisphere areas involved are not well defined.
View Article and Find Full Text PDFElife
December 2024
State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China.
Structural hemispheric asymmetry has long been assumed to guide functional lateralization of the human brain, but empirical evidence for this compelling hypothesis remains scarce. Recently, it has been suggested that microstructural asymmetries may be more relevant to functional lateralization than macrostructural asymmetries. To investigate the link between microstructure and function, we analyzed multimodal MRI data in 907 right-handed participants.
View Article and Find Full Text PDFOtol Neurotol Open
September 2024
Department of Otolaryngology - Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD.
Objectives: This study used a cloud-based program, MRICloud, which parcellates T1 MRI brain scans using a probabilistic classification based on manually labeled multi-atlas, to create a tool to segment Heschl gyrus (HG) and the planum temporale (PT).
Methods: MRICloud is an online platform that can automatically segment structural MRIs into 287 labeled brain regions. A 31-brain multi-atlas was manually resegmented to include tags for the HG and PT.
bioRxiv
September 2024
Brain and Language Lab, Cognitive Science Hub, University of Vienna, Vienna, Austria.
High-level cognitive skill development relies on genetic and environmental factors, tied to brain structure and function. Inter-individual variability in language and music skills has been repeatedly associated with the structure of the auditory cortex: the shape, size and asymmetry of the transverse temporal gyrus (TTG) or gyri (TTGs). TTG is highly variable in shape and size, some individuals having one single gyrus (also referred to as Heschl's gyrus, HG) while others presenting duplications (with a common stem or fully separated) or higher-order multiplications of TTG.
View Article and Find Full Text PDFHum Brain Mapp
September 2024
Rotman Research Institute, Baycrest Academy for Research and Education, Toronto, Ontario, Canada.
The relationship between speech production and perception is a topic of ongoing debate. Some argue that there is little interaction between the two, while others claim they share representations and processes. One perspective suggests increased recruitment of the speech motor system in demanding listening situations to facilitate perception.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!