Toe agnosia in Gerstmann syndrome

Abstract

The following case report presents a patient exhibiting Gerstmann syndrome accompanied by toe agnosia. A 72 year old right handed woman had a focal lesion in the angular gyrus of the left hemisphere which was caused by a glioblastoma multiforme. The first symptom she had complained of was severe headache. Standardised neuropsychological tests of intelligence, memory, attention, fluency, apraxia, and language functions as well as tests for the assessment of agraphia, acalculia, right-left disorientation, and digit agnosia were performed. The patient displayed all four symptoms of the Gerstmann syndrome-namely, agraphia, acalculia, right-left disorientation, and finger agnosia. The patient did not display aphasia, constructional apraxia, or any other neuropsychological impairment. In addition to the four symptoms of the Gerstmann syndrome an agnosia of the toes was found. Further studies should determine whether finger agnosia in Gerstmann syndrome is usually accompanied by toe agnosia. Finger agnosia in the context of this syndrome may be better named digit agnosia.

Neural correlates of numbers and mathematical terms

“…This idea has been supported by some studies (e.g., Chochon et al, 1999;Dehaene et al, 1999;Lee, 2000;Simon et al, 2002), but not others (e.g., Andres et al, 2011;Dehaene et al, 1996;Delazer and Benke, 1997;Pesenti et al, 2000;Tucha et al, 1997;Van Harskamp et al, 2002;Zhou et al, 2007). For example, several studies have found that injuries to the angular gyrus or even the removal of this brain region did not affect subjects' performance on multiplication (e.g., Delazer and Benke, 1997;Tucha et al, 1997;van Harskamp et al, 2002). Zhou et al (2007) found that multiplication did not have greater activation than addition in the angular gyrus, only in the superior temporal gyrus, precentral gyrus and supplementary motor area.…”

Gerstmann's Syndrome: A Rare Clinical Condition with a Tetrad of Symptoms

“…In the following decades, a strong relationship between lesions in the dominant hemisphere and Gerstmann syndrome was confirmed, more specifically in the angular gyrus of the parietal lobe. [3][4][5][6][7] The lesions in this gyrus are associated predominantly with the symptoms of agraphia and acalculia. 8 MRI brain of the patient in present case was suggestive of involvement of parietal lobe of dominant hemisphere.…”

Transient Gerstmann syndrome as manifestation of stroke: Case report and brief literature review

“…In the decades that followed, a strong relationship between lesions in the dominant hemisphere and GS was confirmed, more specifically in the angular gyrus of the parietal lobe. 5 - 8 Lesions in this gyrus are associated predominantly with the symptoms of agraphia and acalculia. 9 …”