2013
DOI: 10.1007/s12311-013-0480-0
|View full text |Cite
|
Sign up to set email alerts
|

Perverted Head Impulse Test in Cerebellar Ataxia

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1
1

Citation Types

0
6
0

Year Published

2013
2013
2024
2024

Publication Types

Select...
10

Relationship

2
8

Authors

Journals

citations
Cited by 16 publications
(6 citation statements)
references
References 12 publications
0
6
0
Order By: Relevance
“…Thus, one should suspect a central pathology if a patient with acute vertigo and spontaneous nystagmus exhibits normal HIT [ 13 ]. A refixation saccade in a different plane (i.e., vertical catch-up saccade after horizontal rotation) also suggests a central lesion [ 41 - 43 ]. However, bedside HIT may be negative when the vestibular deficits are partial [ 44 ] or the covert saccades complement the vestibular deficits [ 39 ].…”
Section: Acute Spontaneous Dizziness/vertigomentioning
confidence: 99%
“…Thus, one should suspect a central pathology if a patient with acute vertigo and spontaneous nystagmus exhibits normal HIT [ 13 ]. A refixation saccade in a different plane (i.e., vertical catch-up saccade after horizontal rotation) also suggests a central lesion [ 41 - 43 ]. However, bedside HIT may be negative when the vestibular deficits are partial [ 44 ] or the covert saccades complement the vestibular deficits [ 39 ].…”
Section: Acute Spontaneous Dizziness/vertigomentioning
confidence: 99%
“…Conversely, in cerebellar disorders HIT is mostly normal, but horizontal (compensatory) or downward (perverted) corrective saccades have been described during horizontal HIT. 3,4 Instead, our patient showed reversed (paradoxical) corrective saccades in the same direction of head rotation during bedside HIT. This paradoxical response should be considered an additional bedside cerebellar sign and may be useful in detecting cerebellar dysfunction.…”
Section: Discussionmentioning
confidence: 57%
“…Previous reports proposed that apositive head impulse test with preserved caloric response is most likely due to cerebellar flocculus dysfunction, considering the findings of previous studies related to the high-frequency VOR. [6][7][8][9] This ocularmotorfindingis meaningful in that it expands the neurotolgical findings of AxD. While no structural lesions were identified in the flocculus on brain MRI, cervicomedullary atrophy with intramedullary signal changes suggests broader implications for the functional integration within the medulla and cerebellum.…”
mentioning
confidence: 56%