Horizontal and vertical neglect dyslexia.
This case study concerns a 25-year-old right-handed male patient (G.G.) with post-traumatic lesions involving the right temporal and occipital lobe as well as the basal forebrain of the same side. G.G., who had a visual field defect almost limited to the upper left quadrant, showed both left horizontal and lower vertical neglect dyslexia, disproportionately severe when compared with left and lower visuo-spatial neglect. This is the first case report of a patient whose neglect dyslexia for vertical stimuli depended upon stimulus orientation, i.e., errors affected the final letters of top-down words and the initial letters of the bottom-up ones. This implies that neglect dyslexia can affect the internal letter shape map not only along the horizontal, but also along the vertical axis.
Clinica Neurologica, Università di Modena, Italy.
P
P
Nichelli
A
A
Venneri
R
R
Pentore
R
R
Cubelli
D000328:Adult; D001930:Brain Injuries / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology*; D004410:Dyslexia / Q000209:etiology / Q000503:physiopathology*; D005556:Form Perception / Q000502:physiology*; D007839:Functional Laterality; D006408:Hematoma, Subdural / Q000150:complications / Q000503:physiopathology; D006801:Humans; D008297:Male; D009778:Occipital Lobe / Q000503:physiopathology; D016548:Prosencephalon / Q000503:physiopathology; D011932:Reading; D013028:Space Perception; D013702:Temporal Lobe / Q000503:physiopathology; D014057:Tomography, X-Ray Computed; D014794:Visual Fields; D014796:Visual Perception