Abstract
Retrochiasmal visual pathways include optic tracts, lateral geniculate nuclei, optic radiations, and striate cortex (V1). Homonymous hemianopsia and field defect variants with relatively normal visual acuity suggest that the lesions involve retrochiasmal pathways. From V1, visual input is projected to higher visual association areas that are responsible for perception of objects, faces, colors, and orientation. Visual association areas are classified into ventral and dorsal pathways. Damage to the ventral stream results in visual object agnosia, prosopagnosia, and achromatopsia. Balint syndrome, visual inattention, and pure alexia are examples of dorsal stream disorders. Posterior cortical atrophy can involve ventral and dorsal streams, often preceding dementia.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 411-424 |
| Number of pages | 14 |
| Journal | Neuroimaging Clinics of North America |
| Volume | 25 |
| Issue number | 3 |
| DOIs | |
| State | Published - Aug 1 2015 |
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Keywords
- Lateral geniculate nucleus
- MR imaging
- Optic radiation
- Optic tract
- Striate cortex
- Visual association areas
- Visual cortex
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
- Clinical Neurology
Cite this
Imaging of Retrochiasmal and Higher Cortical Visual Disorders. / Tantiwongkosi, Bundhit; Salamon, Noriko.
In: Neuroimaging Clinics of North America, Vol. 25, No. 3, 01.08.2015, p. 411-424.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Imaging of Retrochiasmal and Higher Cortical Visual Disorders
AU - Tantiwongkosi, Bundhit
AU - Salamon, Noriko
PY - 2015/8/1
Y1 - 2015/8/1
N2 - Retrochiasmal visual pathways include optic tracts, lateral geniculate nuclei, optic radiations, and striate cortex (V1). Homonymous hemianopsia and field defect variants with relatively normal visual acuity suggest that the lesions involve retrochiasmal pathways. From V1, visual input is projected to higher visual association areas that are responsible for perception of objects, faces, colors, and orientation. Visual association areas are classified into ventral and dorsal pathways. Damage to the ventral stream results in visual object agnosia, prosopagnosia, and achromatopsia. Balint syndrome, visual inattention, and pure alexia are examples of dorsal stream disorders. Posterior cortical atrophy can involve ventral and dorsal streams, often preceding dementia.
AB - Retrochiasmal visual pathways include optic tracts, lateral geniculate nuclei, optic radiations, and striate cortex (V1). Homonymous hemianopsia and field defect variants with relatively normal visual acuity suggest that the lesions involve retrochiasmal pathways. From V1, visual input is projected to higher visual association areas that are responsible for perception of objects, faces, colors, and orientation. Visual association areas are classified into ventral and dorsal pathways. Damage to the ventral stream results in visual object agnosia, prosopagnosia, and achromatopsia. Balint syndrome, visual inattention, and pure alexia are examples of dorsal stream disorders. Posterior cortical atrophy can involve ventral and dorsal streams, often preceding dementia.
KW - Lateral geniculate nucleus
KW - MR imaging
KW - Optic radiation
KW - Optic tract
KW - Striate cortex
KW - Visual association areas
KW - Visual cortex
UR - http://www.scopus.com/inward/record.url?scp=84937903649&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84937903649&partnerID=8YFLogxK
U2 - 10.1016/j.nic.2015.05.005
DO - 10.1016/j.nic.2015.05.005
M3 - Article
C2 - 26208417
AN - SCOPUS:84937903649
VL - 25
SP - 411
EP - 424
JO - Neuroimaging Clinics of North America
JF - Neuroimaging Clinics of North America
SN - 1052-5149
IS - 3
ER -