Evidence map›Paper›PMID 16543521›Full record

ArticleJournal of neurology, neurosurgery, and psychiatry2006

Visuospatial functions in atypical parkinsonian syndromes.

T H Bak, D Caine, V C Hearn, J R Hodges

Open access · greenAbstract read
In one paragraph

Article in Journal of neurology, neurosurgery, and psychiatry, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

42 citing papers in PubMed, 1 synthesis or guideline pooled it, 103 citations in OpenAlex.

  1. Pooled it
  2. Longitudinal cognitive outcomes in two progressive supranuclear palsy clinical trials.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Trial
  3. Article
  4. Language impairment is associated with faster progression in progressive supranuclear palsy-Richardson syndrome.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Cognition in multiple system atrophy: a single-center cohort study.Annals of clinical and translational neurology · 2020
    Article
  17. Visual Object Perception in Premanifest and Early Manifest Huntington's Disease.Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists · 2019
    Article
  18. Article
  19. Review
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

T H BakMRC Cognition and Brain Sciences Unit, Cambridge CB2 2EF, UK.
D Caine
V C Hearn
J R Hodges
Addenbrooke's Hospital · GB

Funding

Medical Research Council MC_U105559861
6 · The paper itself

Abstract

objectivesVisuospatial deficits have been occasionally reported but never systematically studied in atypical parkinsonian syndromes. The interpretation of existing studies is complicated by the possible influence of motor and frontal executive deficits. Moreover, no attempt has been made to distinguish visuoperceptual from visuospatial tasks. The aim of the present study was to assess visuoperceptual and visuospatial abilities in three atypical parkinsonian syndromes while minimising the influence of confounding variables.

methodsTwenty patients with multiple system atrophy (MSA), 43 with progressive supranuclear palsy (PSP), and 25 with corticobasal degeneration (CBD) as well as 30 healthy age matched controls were examined with the Visual Object and Space Perception Battery (VOSP).

resultsVisuospatial functions were intact in MSA patients. PSP patients showed mild deficits related to general cognitive decline and the severity of oculomotor symptoms. The CBD group showed the most pronounced deficits, with spatial tasks more impaired than object based tasks. Performance on object based, but not spatial, tasks was related to general cognitive status. The extent of the visuospatial impairment could not be predicted from disease duration or severity.

conclusionVisuospatial functions are not consistently impaired in atypical parkinsonian syndromes. The degree and pattern of impairment varies across the diseases, suggesting that the observed deficits could have a different neural basis in each condition. The distinction between the object based ("ventral stream") and the space oriented ("dorsal stream") processing might be useful in the interpretation of visuospatial deficits in parkinsonian syndromes, especially in CBD.

Indexed as

AgedCognition DisordersDisability EvaluationEye MovementsFemaleHumansMaleMiddle AgedMultiple System AtrophyNeuropsychological TestsParkinson DiseasePerceptual DisordersSpace PerceptionSpinocerebellar DegenerationsSupranuclear Palsy, ProgressiveVisual Perception

Identifiers

PMID16543521
PMCPMC2077492
OpenAlexW2071332161

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.