scholarly journals Two New Cytoarchitectonic Areas on the Human Mid-Fusiform Gyrus

2015 ◽  
pp. bhv225 ◽  
Author(s):  
Simon Lorenz ◽  
Kevin S. Weiner ◽  
Julian Caspers ◽  
Hartmut Mohlberg ◽  
Axel Schleicher ◽  
...  
Keyword(s):  
Fusiform Gyrus ◽  
Cytoarchitectonic Areas

scholarly journals Cerebral trauma-induced dyschromatopsia in the left hemifield: case presentation

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Yoko Mase ◽  
Yoshitsugu Matsui ◽  
Eriko Uchiyama ◽  
Hisashi Matsubara ◽  
Masahiko Sugimoto ◽  
...  
Keyword(s):  
Visual Field ◽  
Color Vision ◽  
Temporal Lobe ◽  
Fusiform Gyrus ◽  
Ganglion Cell Complex ◽  
Automated Perimetry ◽  
Subjective Symptoms ◽  
Anterior Temporal Lobe ◽  
Case Presentation ◽  
Cerebral Trauma

Abstract Background Acquired color anomalies caused by cerebral trauma are classified as either achromatopsias or dyschromatopsias (Zeki, Brain 113:1721–1777, 1990). The three main brain regions stimulated by color are V1, the lingual gyrus, which was designated as human V4 (hV4), and the fusiform gyrus, designated as V4α. (Zeki, Brain 113:1721–1777, 1990). An acquired cerebral color anomaly is often accompanied by visual field loss (hemi- and quadrantanopia), facial agnosia, prosopagnosia, visual agnosia, and anosognosia depending on the underlying pathology (Bartels and Zeki, Eur J Neurosci 12:172–193, 2000), (Meadows, Brain 97:615–632, 1974), (Pearman et al., Ann Neurol 5:253–261, 1979). The purpose of this study was to determine the characteristics of a patient who developed dyschromatopsia following a traumatic injury to her brain. Case presentation The patient was a 24-year-old woman who had a contusion to her right anterior temporal lobe. After the injury, she noticed color distortion and that blue objects appeared green in the left half of the visual field. Although conventional color vision tests did not detect any color vision abnormalities, short wavelength automated perimetry (SWAP) showed a decrease in sensitivity consistent with a left hemi-dyschromatopsia. Magnetic resonance imaging (MRI) detected abnormalities in the right fusiform gyrus, a part of the anterior temporal lobe. At follow-up 14 months later, subjective symptoms had disappeared, but the SWAP abnormalities persisted and a thinning of the sectorial ganglion cell complex (GCC) was detected. Conclusion The results indicate that although the subjective symptoms resolved early, a reduced sensitivity of SWAP remained and the optical coherence tomography (OCT) showed GCC thinning. We conclude that local abnormalities in the anterior section of fusiform gyrus can cause mild cerebral dyschromatopsia without other symptoms. These findings indicate that it is important to listen to the symptoms of the patient and perform appropriate tests including the SWAP and OCT at the early stage to objectively prove the presence of acquired cerebral color anomaly.

Receptor architecture of visual areas in the face and word-form recognition region of the posterior fusiform gyrus

2013 ◽  
Vol 220 (1) ◽  
pp. 205-219 ◽  
Author(s):  
Julian Caspers ◽  
Nicola Palomero-Gallagher ◽  
Svenja Caspers ◽  
Axel Schleicher ◽  
Katrin Amunts ◽  
...  
Keyword(s):  
Fusiform Gyrus ◽  
Word Form ◽  
Form Recognition ◽  
Visual Areas ◽  
The Face

Brain-Behavior Dynamics Between The Left Fusiform and Reading

2021 ◽  
Author(s):  
Caroline Beelen ◽  
Jan Wouters ◽  
Pol Ghesquière ◽  
Maaike Vandermosten
Keyword(s):  
Reading Skills ◽  
Word Reading ◽  
Brain Plasticity ◽  
Early Stage ◽  
Fusiform Gyrus ◽  
Advanced Stage ◽  
Behavior Dynamics ◽  
Grade 5 ◽  
Bidirectional Relations ◽  
Mri Study

Abstract The visual word form area (VWFA) plays a significant role in the development of reading skills. However, the developmental course and anatomical properties of the VWFA have only limitedly been investigated. The aim of the current longitudinal MRI study was to investigate dynamic, bidirectional relations between reading and the structure of the left fusiform gyrus at the early-to-advanced reading stage. More specifically, by means of bivariate correlations and a cross-lagged panel model (CLPM), the interrelations between the size of the left fusiform gyrus and reading skills (a composite score of a word and pseudo-word reading task) were studied in a longitudinal cohort of 43 Flemish children (29M, 14F) with variable reading skills in grade 2 (the early stage of reading) and grade 5 (the advanced stage of reading) of primary school. Results revealed that better reading skills at grade 2 lead to a larger size of the left fusiform gyrus at grade 5, whereas there are no directional effects between the size of the left fusiform gyrus at grade 2 and reading skills at grade 5. Hence, according to our results there is behavior-driven brain plasticity and no brain-driven reading change between the early and advanced stage of reading. Together with pre-reading brain studies showing predictive relations to later reading scores, our results suggest that the direction of brain-behavioral influences changes throughout the course of reading development.

Reduced Fusiform Gyrus Activation During Face Processing in Pediatric Brain Tumor Survivors

2021 ◽  
pp. 1-10
Author(s):  
Matthew C. Hocking ◽  
Robert T. Schultz ◽  
Jane E. Minturn ◽  
Cole Brodsky ◽  
May Albee ◽  
...  
Keyword(s):  
Brain Tumor ◽  
Social Behavior ◽  
Face Processing ◽  
Pediatric Brain Tumor ◽  
Brain Activation ◽  
Autism Spectrum ◽  
Fusiform Gyrus ◽  
The Social ◽  
Social Difficulties ◽  
Pediatric Brain

Abstract Objective: The neural mechanisms contributing to the social problems of pediatric brain tumor survivors (PBTS) are unknown. Face processing is important to social communication, social behavior, and peer acceptance. Research with other populations with social difficulties, namely autism spectrum disorder, suggests atypical brain activation in areas important for face processing. This case-controlled functional magnetic resonance imaging (fMRI) study compared brain activation during face processing in PBTS and typically developing (TD) youth. Methods: Participants included 36 age-, gender-, and IQ-matched youth (N = 18 per group). PBTS were at least 5 years from diagnosis and 2 years from the completion of tumor therapy. fMRI data were acquired during a face identity task and a control condition. Groups were compared on activation magnitude within the fusiform gyrus for the faces condition compared to the control condition. Correlational analyses evaluated associations between neuroimaging metrics and indices of social behavior for PBTS participants. Results: Both groups demonstrated face-specific activation within the social brain for the faces condition compared to the control condition. PBTS showed significantly decreased activation for faces in the medial portions of the fusiform gyrus bilaterally compared to TD youth, ps ≤ .004. Higher peak activity in the left fusiform gyrus was associated with better socialization (r = .53, p < .05). Conclusions: This study offers initial evidence of atypical activation in a key face processing area in PBTS. Such atypical activation may underlie some of the social difficulties of PBTS. Social cognitive neuroscience methodologies may elucidate the neurobiological bases for PBTS social behavior.

The paramedian supracerebellar transtentorial approach to the posterior fusiform gyrus

2016 ◽  
Vol 158 (11) ◽  
pp. 2149-2154 ◽  
Author(s):  
Anthony M. T. Chau ◽  
Filippo Gagliardi ◽  
Adam Smith ◽  
Nicholas R. Pelzer ◽  
Fiona Stewart ◽  
...  
Keyword(s):  
Fusiform Gyrus ◽  
Transtentorial Approach
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