Perception of subjective visual vertical and horizontal in patients with chronic neck pain: A cross-sectional observational study
Authors: Docherty, S., Schärer, R., Bagust, J. and Humphreys, B.K.
Journal: Manual Therapy
Volume: 17
Issue: 2
Pages: 133-138
eISSN: 1532-2769
ISSN: 1356-689X
DOI: 10.1016/j.math.2011.11.002
Abstract:Previous studies have shown that chronic neck pain (CNP) patients have a larger spread of perceptual errors for subjective visual vertical (SVV) than those exhibited by asymptomatic controls. The current study investigated whether this was also the case for perception of subjective visual horizontal (SVH) and whether there was a correlation between the two measurements. Fifty patients with CNP were compared with a group of 50 age- and gender-matched controls. All subjects were required to complete a test to measure SVH as well as SVV using the computerised rod and frame (CRAF) test. These tests were conducted under various frame conditions. No difference was found between the errors of the CNP and control groups in the absence of a surrounding frame. When a tilted frame was added to the CRAF test, the range of errors observed in the CNP group increased for both SVV and SVH. In particular, significantly more CNP patients fell outside the reference range of errors and a subgroup of patients, characterised by higher neck pain disability indices, was identified who demonstrated higher than expected errors for both SVV and SVH. However no conclusion could be drawn with regards to the direction of error asymmetry and laterality of pain as those patients with unilateral pain exhibited errors both towards and away from the affected area. © 2011 Elsevier Ltd.
Source: Scopus
Perception of subjective visual vertical and horizontal in patients with chronic neck pain: a cross-sectional observational study.
Authors: Docherty, S., Schärer, R., Bagust, J. and Humphreys, B.K.
Journal: Man Ther
Volume: 17
Issue: 2
Pages: 133-138
eISSN: 1532-2769
DOI: 10.1016/j.math.2011.11.002
Abstract:Previous studies have shown that chronic neck pain (CNP) patients have a larger spread of perceptual errors for subjective visual vertical (SVV) than those exhibited by asymptomatic controls. The current study investigated whether this was also the case for perception of subjective visual horizontal (SVH) and whether there was a correlation between the two measurements. Fifty patients with CNP were compared with a group of 50 age- and gender-matched controls. All subjects were required to complete a test to measure SVH as well as SVV using the computerised rod and frame (CRAF) test. These tests were conducted under various frame conditions. No difference was found between the errors of the CNP and control groups in the absence of a surrounding frame. When a tilted frame was added to the CRAF test, the range of errors observed in the CNP group increased for both SVV and SVH. In particular, significantly more CNP patients fell outside the reference range of errors and a subgroup of patients, characterised by higher neck pain disability indices, was identified who demonstrated higher than expected errors for both SVV and SVH. However no conclusion could be drawn with regards to the direction of error asymmetry and laterality of pain as those patients with unilateral pain exhibited errors both towards and away from the affected area.
Source: PubMed
Perception of subjective visual vertical and horizontal in patients with chronic neck pain: A cross-sectional observational study
Authors: Docherty, S., Schaerer, R., Bagust, J. and Humphreys, B.K.
Journal: MANUAL THERAPY
Volume: 17
Issue: 2
Pages: 133-138
eISSN: 1532-2769
ISSN: 1356-689X
DOI: 10.1016/j.math.2011.11.002
Source: Web of Science (Lite)
Perception of subjective visual vertical and horizontal in patients with chronic neck pain: a cross-sectional observational study.
Authors: Docherty, S., Schärer, R., Bagust, J. and Humphreys, B.K.
Journal: Manual therapy
Volume: 17
Issue: 2
Pages: 133-138
eISSN: 1532-2769
ISSN: 1356-689X
DOI: 10.1016/j.math.2011.11.002
Abstract:Previous studies have shown that chronic neck pain (CNP) patients have a larger spread of perceptual errors for subjective visual vertical (SVV) than those exhibited by asymptomatic controls. The current study investigated whether this was also the case for perception of subjective visual horizontal (SVH) and whether there was a correlation between the two measurements. Fifty patients with CNP were compared with a group of 50 age- and gender-matched controls. All subjects were required to complete a test to measure SVH as well as SVV using the computerised rod and frame (CRAF) test. These tests were conducted under various frame conditions. No difference was found between the errors of the CNP and control groups in the absence of a surrounding frame. When a tilted frame was added to the CRAF test, the range of errors observed in the CNP group increased for both SVV and SVH. In particular, significantly more CNP patients fell outside the reference range of errors and a subgroup of patients, characterised by higher neck pain disability indices, was identified who demonstrated higher than expected errors for both SVV and SVH. However no conclusion could be drawn with regards to the direction of error asymmetry and laterality of pain as those patients with unilateral pain exhibited errors both towards and away from the affected area.
Source: Europe PubMed Central