PSYC 215 Lecture Notes - Lecture 18: Porthole, Basal Ganglia, Hemispatial Neglect
29 May 2018
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Department
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Professor
Patient VB
• 80 y/o woman
• Educated through age 14
• Left school to work in cotton mill
• 1981-1983: series of strokes
• Lesion inferred from deficits: R frontal, parietal, and occipital
• Symptoms of left neglect
• Intact visual fields
• Tasks
• Reading words aloud
• Tower → “answer”
• Yellow → “pillow”
• Cabin → “robin”
• Reading words aloud in RVF
• Sake → lake (if it were retinocentric - she would say “sake”, egocentric-
would still not see the left side- which is what happened)
• Hoof → roof
• Reading rotated words
• Upside down plant → “plane”
• Upside down pear → “pearl”
• Upside down score → “scorn”
• this is a stimulus-based reference frame= represented AS IS
• If it were word centered frame -- “rant”, “fear”, “tore”
• → evidence for OBJECT-centered (stimulus-centered)
Patient NG
• 79 y/o woman
• 8th grade education
• Premorbid reading and writing goof
• Left-hemisphere stroke damaging parietal white matter and basal ganglia
• Parietal-- visually guided navigation, vision for action-- RULED OUT (she
performed well in posting tasks, etc..)
• Intact visual fields
• Tasks
• Line cross-off task
• she crosses of the lines on the left and not those on the right
• Draw a clock from memory and from direct copy
• Only draw left side of clock
• Draw house scene
• Drawing only left sides of each object in the scene (left of house, trees,
fence) → this is ego based, possibly OBJECT(stimulus)-centered frame?
• Reading words aloud
• Hound → “house”
• sprinter→ “sprinkle”
• stripe→ “strip”
• Reading words aloud LVF
• Frown → “from”
• Expect → “express”
• allow→ “allot”
• Reading mirror reversed words
• Mirror reversed common → “comet”
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