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3-Dimensional Evaluation of Body Perception

— Observational Body Image Cognition Decision Making Visuospatial/Perceptual Abilities

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
This is an observational study: the protocol does not assign a study treatment.
Who it may be relevant to
Registry conditions: Body Image, Cognition, Decision Making, Visuospatial/Perceptual Abilities. Basic parameters: 18 years — 65 years · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
Center list to be confirmed — check the primary protocol.
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

Unsure about the terms? Read our patient guide →

Official title

Evaluation of Neurocognitive Skills, VisuoSpatial Perception and Perspective Perception in Amputees

Overview

The goal of this observational study is to evaluate the changing body perception of amputees aged 18-65 years using prostheses through different personal perspectives of the right-left distinction. In addition, we aimed to examine the relationship between possible changes in body perception and visual spatial perception and neurocognitive performances. The main questions that this study aimed to answer are as follows: 1. Is there a difference between the amputee group and the control group in terms of parameters related to body perception? 2. Is there a difference between the amputee group and the control group in terms of neurocognitive skills? 3. Is there any difference between the amputee group and the control group in terms of visual spatial perception abilities? To examine whether changes in body perception in amputees affect neurocognitive performance, visuospatial perception and perspective perception and the relationship between them will be compared with a healthy control group. The assessments to be applied to both groups can be summarised as follows: * Demographic information such as age, gender, and education level will be recorded. * Mini-mental state test will be used to assess the cognitive level. * Edinburgh Handedness Scale will be used to determine the dominant side. * Right-left discrimination and personal perspective perception will be assessed using a desktop programme. * The clock drawing test and Benton line orientation test will be used to visual spatial perception. * A computer based program called The Central Nervous System (CNS) Vital Signs Neurocognitive Test Battery will be used to asesses neurocognitive abilities.

Primary outcome measures

  • Standardized Mini Mental State Test [Time frame: 5 minutes]
  • Edinburgh Hand Preference Inventory [Time frame: 2 minutes]
  • Clock Drawing Test [Time frame: 5 minutes]
  • Benton Line Orientation Test [Time frame: 15-20 minutes]
  • CNS Vital Signs Test [Time frame: 25 minutes]
  • Evaluation of Perspective Perception [Time frame: 10-15 minutes]
  • Right-left Discrimination Test [Time frame: 5-10 minutes]

Eligibility criteria

Inclusion criteria for the amputee group:

  • Acquired amputees
  • Aged 18-65 years
  • Using a prosthesis for at least six months
  • At least a primary school graduate
  • Individuals who can adapt to prolonged, attention-demanding activities will be included.
  • Standardised Mini Mental State Examination score of >24.

Following the recruitment of the amputee group, a healthy control group will be recruited to match it in terms of age, gender and educational status.

Inclusion criteria for the healthy control group:

  • Age range: 18-65 years
  • At least a primary school graduate
  • Individuals who can adapt to prolonged, attention-demanding activities will be included.
  • Standardised Mini Mental State Examination score of >24.

Exclusion criteria for the amputee group:

  • Individuals with congenital amputation
  • Those with phantom limb pain and/or sensation
  • Those with an open wound on the stump
  • Bilateral amputation
  • Any neurological or psychiatric diagnosis
  • Those using sedative medication and/or its derivatives
  • Have vision and related problems
  • Individuals who are illiterate
  • Individuals participating in treatments targeting body representation (e.g. imagery-based treatments or progressive motor visualisation) will not be included in the study.

Exclusion criteria for the Healthy Control Group:

  • Having any neurological or psychiatric diagnosis
  • Using sedative medication and/or its derivatives
  • People with vision and related problems
  • Illiterate individuals will not be included in the study.

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: Yes

Study design

Observational model
Case-control

Study locations

Center list to be confirmed — check the primary protocol.

Publications

  • Rosen AB, McGrath ML, Maerlender AL. Males with chronic ankle instability demonstrate deficits in neurocognitive function compared to control and copers. Res Sports Med. 2021 Mar-Apr;29(2):116-128. doi: 10.1080/15438627.2020.1723099. Epub 2020 Jan 29. PMID 31992081
  • Gualtieri CT, Johnson LG. Reliability and validity of a computerized neurocognitive test battery, CNS Vital Signs. Arch Clin Neuropsychol. 2006 Oct;21(7):623-43. doi: 10.1016/j.acn.2006.05.007. Epub 2006 Oct 2. PMID 17014981
  • Dilek B, Tavli EY, Yilmaz E, Yaşar E, Ocal T, Çetinkaya O, et al. A Mobile Application Program that Configures Right-Left Hand Recognition According to the Degree of Mental Rotation Difficulty. 2024 Medical Technologies Congress (TIPTEKNO). 2024. IEEE. p.1-3. doi:
  • Oldfield RC. The assessment and analysis of handedness: the Edinburgh inventory. Neuropsychologia. 1971 Mar;9(1):97-113. doi: 10.1016/0028-3932(71)90067-4. No abstract available. PMID 5146491
  • Molloy DW, Alemayehu E, Roberts R. Reliability of a Standardized Mini-Mental State Examination compared with the traditional Mini-Mental State Examination. Am J Psychiatry. 1991 Jan;148(1):102-5. doi: 10.1176/ajp.148.1.102. PMID 1984692
  • Folstein MF, Folstein SE, McHugh PR. "Mini-mental state". A practical method for grading the cognitive state of patients for the clinician. J Psychiatr Res. 1975 Nov;12(3):189-98. doi: 10.1016/0022-3956(75)90026-6. No abstract available. PMID 1202204

Identifiers

NCT: NCT06985329 · TÜTFGOBAEK 2025/20

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗