Relationship between Visual and Motor Imagery

2007 ◽  
Vol 104 (3) ◽  
pp. 823-843 ◽  
Author(s):  
Laura P. McAvinue ◽  
Ian H. Robertson
Keyword(s):  
Motor Imagery ◽  
Principal Components ◽  
Visual Imagery ◽  
Correlation Matrix ◽  
Self Report ◽  
Imagery Ability ◽  
Self Reports ◽  
Implicit Motor ◽  
Components Analysis ◽  
The Relationship

The relationship between visual and motor imagery was investigated by administering a battery of visual and motor imagery measures to a sample of 101 men ( n = 49) and women ( n = 52), who ranged in age from 18 to 59 ( M=34.5, SD=12.6). A principal components analysis applied to the correlation matrix indicated four underlying components, which explained 62.9% of the variance. The components were named Implicit Visual Imagery Ability, Self-report of Visual and Motor Imagery, Implicit Motor Imagery Ability, and Explicit Motor Imagery Ability. These results suggested a dissociation between visual and motor imagery although visual and motor imagery were associated as self-reports and there were correlations among particular measures.

scholarly journals Recovery of Motor Imagery Ability in Stroke Patients

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Sjoerd de Vries ◽  
Marga Tepper ◽  
Bert Otten ◽  
Theo Mulder
Keyword(s):  
Motor Imagery ◽  
Mental Imagery ◽  
Hand Function ◽  
Mental Practice ◽  
Imagery Ability ◽  
Stroke Patients ◽  
Motor Functioning ◽  
Rehabilitation Process ◽  
Implicit Motor ◽  
The Relationship

Objective. To investigate whether motor imagery ability recovers in stroke patients and to see what the relationship is between different types of imagery and motor functioning after stroke.Methods. 12 unilateral stroke patients were measured at 3 and 6 weeks poststroke on 3 mental imagery tasks. Arm-hand function was evaluated using the Utrecht Arm-Hand task and the Brunnström Fugl-Meyer Scale. Age-matched healthy individuals (N=10) were included as controls.Results. Implicit motor imagery ability and visual motor imagery ability improved significantly at 6 weeks compared to 3 weeks poststroke.Conclusion. Our study shows that motor imagery can recover in the first weeks after stroke. This indicates that a group of patients who might not be initially selected for mental practice can, still later in the rehabilitation process, participate in mental practice programs. Moreover, our study shows that mental imagery modalities can be differently affected in individual patients and over time.

Anhedonia and Alexithymia: Distinct or Overlapping Constructs

1997 ◽  
Vol 84 (2) ◽  
pp. 415-425 ◽  
Author(s):  
Gwenolé Loas ◽  
Didier Fremaux ◽  
Patrice Boyer
Keyword(s):  
Principal Components Analysis ◽  
Principal Components ◽  
Correlation Matrix ◽  
Healthy Subjects ◽  
Factor Solution ◽  
Toronto Alexithymia Scale ◽  
Factor Loadings ◽  
Components Analysis ◽  
Physical Anhedonia ◽  
The Relationship

The aim was to examine the relationship between alexithymia, anhedonia, and capacity for displeasure in a group of 133 healthy subjects using principal components analysis. A correlation matrix comprised of items from both the Communication and Identification scale of the 20-item Toronto Alexithymia Scale and the Physical Pleasure-Displeasure Scale yielded a four-factor solution (one Communication-Identification, two Pleasure, and one Displeasure factor) with no overlap of the significant factor loadings for the items from each scale. Moreover, there were no positive significant correlations between the Communication and Identification Scales and the Physical Anhedonia Scale. Our findings support the view that physical anhedonia is a construct distinct and separate from alexithymia.

Relationship Aspects of Hypnotic Susceptibility

1980 ◽  
Vol 51 (3_suppl2) ◽  
pp. 1032-1034 ◽  
Author(s):  
David P. Fourie
Keyword(s):  
Principal Components Analysis ◽  
Principal Components ◽  
Correlation Matrix ◽  
Point Of View ◽  
Rater Agreement ◽  
Hypnotic Susceptibility ◽  
The Subject ◽  
Components Analysis ◽  
The Relationship

If hypnosis is seen from an interpersonal point of view it could be hypothesized that aspects of the relationship existing between the hypnotist and the subject prior to hypnosis would probably be related to the subject's susceptibility to the hypnosis. A study was conducted to test this hypothesis. 19 volunteer subjects were individually tested for hypnotic susceptibility using the Stanford Hypnotic Susceptibility Scales, Form A. In each case this was preceded by a short tape-recorded non-directive interview. Four independent raters rated the interviews on 10 behavioral dimensions plus general “hypnotizability,” using seven-point scales. Although the coefficients of inter-rater agreement were generally low, the signs of the correlations between mean ratings and Stanford scores were as predicted in all 11 cases. Three of the correlations were significant. From a principal components analysis on the inter-correlation matrix, three factors emerged of which one was labelled Hypnotic Susceptibility.

Face Recognition Algorithm Based on Kernel Collaborative Representation

2013 ◽  
Vol 756-759 ◽  
pp. 3590-3595
Author(s):  
Liang Zhang ◽  
Ji Wen Dong
Keyword(s):  
Face Recognition ◽  
Principal Components Analysis ◽  
Principal Components ◽  
Recognition Algorithm ◽  
Experimental Results ◽  
Collaborative Representation ◽  
Nonlinear Structures ◽  
Components Analysis ◽  
Kernel Principal Components Analysis ◽  
The Relationship

Aiming at solving the problems of occlusion and illumination in face recognition, a new method of face recognition based on Kernel Principal Components Analysis (KPCA) and Collaborative Representation Classifier (CRC) is developed. The KPCA can obtain effective discriminative information and reduce the feature dimensions by extracting faces nonlinear structures features, the decisive factor. Considering the collaboration among the samples, the CRC which synthetically consider the relationship among samples is used. Experimental results demonstrate that the algorithm obtains good recognition rates and also improves the efficiency. The KCRC algorithm can effectively solve the problem of illumination and occlusion in face recognition.

What are the determinants of explicit and implicit motor imagery ability in stroke patients?: a controlled study

2020 ◽  
Vol 37 (2) ◽  
pp. 84-91
Author(s):  
Esma Nur Kolbaşı ◽  
Burcu Ersoz Huseyinsinoglu ◽  
Hacı Ali Erdoğan ◽  
Murat Çabalar ◽  
Nurgül Bulut ◽  
...  
Keyword(s):  
Motor Imagery ◽  
Controlled Study ◽  
Imagery Ability ◽  
Stroke Patients ◽  
Implicit Motor

scholarly journals The Relationship between Motor Imagery Ability and Change of Performance

2016 ◽  
Vol 31 (2) ◽  
pp. 221-225
Author(s):  
Kazuya UMENO ◽  
Kouichi NAKAMURA
Keyword(s):  
Motor Imagery ◽  
Imagery Ability ◽  
The Relationship

scholarly journals Exploring the relationship between grapheme colour-picking consistency and mental imagery

2019 ◽  
Vol 374 (1787) ◽  
pp. 20190023 ◽  
Author(s):  
Mary Jane Spiller ◽  
Lee Harkry ◽  
Fintan McCullagh ◽  
Volker Thoma ◽  
Clare Jonas
Keyword(s):  
Mental Rotation ◽  
Mental Imagery ◽  
Research Topic ◽  
Self Report ◽  
Imagery Ability ◽  
Imagery Task ◽  
Self Selection ◽  
Proxy Measure ◽  
Potential Link ◽  
The Relationship

Previous research has indicated a potential link between mental imagery and synaesthesia. However, these findings are mainly based on imagery self-report measures and recruitment of self-selected synaesthetes. To avoid issues of self-selection and demand effects, we recruited participants from the general population, rather than synaesthetes specifically, and used colour-picking consistency tests for letters and numbers to assess a ‘synaesthete-like’ experience. Mental imagery ability and mental rotation ability were assessed using both self-report measures and behavioural assessments. Consistency in colour-picking for letters (but not numbers) was predicted by performance on the visual mental imagery task but not by a mental rotation task or self-report measures. Using the consistency score as a proxy measure of grapheme-colour synaesthesia, we provide more evidence for the suggestion that synaesthetic experience is associated with enhanced mental imagery, even when participants are naive to the research topic. This article is part of a discussion meeting issue ‘Bridging senses: novel insights from synaesthesia’.

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