Occipital Lobe Flashcards
What does the occipital lobe contain?
The visual cortex
The visual cortex processes visual information.
What can damage to the visual cortex cause?
- Visual agnosia
- Visual hallucinations
- Chromatopsia
- Cortical blindness
Chromatopsia is a loss of color vision.
What is prosopagnosia?
An inability to recognize the faces of familiar people
Prosopagnosia is usually caused by bilateral lesions in the occipital temporal junction.
Fill in the blank: Damage to the occipital lobe can lead to _______.
visual agnosia, visual hallucinations, chromatopsia, cortical blindness
True or False: Chromatopsia is the inability to recognize familiar faces.
False
Chromatopsia refers to a loss of color vision, not facial recognition.
What does the occipital lobe contain?
The visual cortex
The visual cortex processes visual information.
What can damage to the occipital lobe cause?
Visual agnosia, visual hallucinations, achromatopsia, cortical blindness
Achromatopsia is the loss of color vision.
What is cortical blindness?
Damage to the primary visual cortex while the eyes and optic nerves are intact.
What happens when the visual cortex in the left hemisphere is damaged?
Blindness affects the right visual field.
What is blindsight?
The ability to respond to visual stimuli without conscious visual perception.
What is affective blindsight?
Responding to emotional visual stimuli without consciously seeing them.
What is an example of affective blindsight?
Patients guess the emotion of a face they cannot consciously see.
What can bilateral lesions in the occipitotemporal junction cause?
Prosopagnosia.
What is prosopagnosia characterized by?
Inability to recognize familiar faces, including one’s own face.
Fill in the blank: Damage to the occipital lobe can cause _______.
visual agnosia
True or False: Cortical blindness occurs when the eyes and optic nerves are damaged.
False
