Functional asymmetry in the face

Chaurasia, B. D.; Goswami, H. K.

doi:10.1159/000144379

Cited by 109 publications

(23 citation statements)

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“…1970]. A functional asymmetry of face only reflects the dominance of one or the other half of the cerebrum for verbal and non-verbal skills and has no structural background [Chaurasia and Goswami, 1975]. The domi nance of one half of the hemisphere over the other in right-and left-handed individuals causes no morphological asymmetry in the skull, as shown by the present work.…”

Section: Discussionsupporting

confidence: 55%

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Asymmetry in the skull

Jain

1979

Cells Tissues Organs

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Section: Discussionsupporting

confidence: 55%

“…between dominant right limb or face with the left, is significant. Chaurasia and Goswami [1975] have described functional asymmetry in the face. It is to be investigated whether such a functional asymmetry has any structural basis (in the skull), as was previously reported in the case of the extremities [Singh, 1970].…”

Section: Introductionmentioning

confidence: 99%

Asymmetry in the skull

Jain

1979

Cells Tissues Organs

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“…[5][6][7][8] The term ''facedness'' indicates greater muscular control on one side of the face relative to the other. 9 In terms of the movements of the corners of the mouth during voluntary smile, most previous studies 7,[10][11][12][13] have reported the left-sided facedness with the laterality (preference in using one side of the body over the other). But other studies 8,14 found neither the facedness 14 nor the laterality.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the relationship between the facedness and the handedness is also controversial. 9,10 The purpose of the present study was to investigate three-dimensionally if there is laterality of asymmetry in displacements of the right and left corners of the mouth during voluntary smile in humans, and if so, to investigate if the laterality of asymmetry observed is explained by the difference between the right and left hemiface size and the handedness.…”

Section: Introductionmentioning

confidence: 99%

Laterality of Asymmetry in Movements of the Corners of the Mouth during Voluntary Smile

Okamoto

Haraguchi

Takada

2010

The Angle Orthodontist

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Objectives: To examine (1) the laterality of asymmetry in movements of the right and left corners of the mouth in space during voluntary smile and (2) the laterality of asymmetry in relation to the difference between the right and left hemiface size and the handedness. Materials and Methods: Participants were 155 volunteer Japanese female adults. They were categorized into the symmetric group (n 5 120) and the right-side hemiface dominant group (n 5 26) according to the hemiface size. In addition, the symmetric group was categorized into the righthanded group (n 5 98) and the left-handed group (n 5 22) according to the Edinburgh Handedness Inventory. Position vectors of the right and left corners of the mouth were obtained from the threedimensional facial images for the rest, the maximal lip corner retraction, and the portrait smile. The displacements of the right and left corners of the mouth for each expression and the proportions of the subjects with the right-and left-sided laterality were compared. Results: The left corner of the mouth showed significantly greater displacement (P , .01) than the right in the symmetric group for the portrait smile. The left-sided laterality was found regardless of the handedness. Conclusions: Displacements of the right and left corners of the mouth during voluntary smile were asymmetric, and the left-sided laterality was found. Also, the laterality of the facedness differed in relation to the hemiface size, but was not related to the handedness. (Angle Orthod. 2010;80:223-229.)

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“…Such passing remarks point to the possibility of an unequal or dissimilar use of the two eyes. Functional asymmetry in the face [Chaurasia and T iwari, 1973;C haurasia and Goswami, 1975] and lower limbs [Singh, 1970;Chaurasia, 1975] has been recently demonRcceived: August I, 1975. strated, but whether any kind of asymmetry exists in the eyes also needs investigation. The present paper records data which are suggestive of unilateral dominance in the eyes.…”

Section: Introductionmentioning

confidence: 99%

Eyedness

Chaurasia¹,

Mathur²

1976

Cells Tissues Organs

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The so-called ‘eyedness’ with regard to fixation of the gaze on a particular point has been investigated on 283 right-handed and 30 left-handed healthy persons of Central India. The results show that the majority (65.81%) of them are right-eyed, and that the eyedness is not influenced by sex or handedness. Though the left cerebral hemisphere seems to play a dominant role in gaze fixation in the greater proportion of the population, consideration of the joint role of the two cerebral hemispheres for individual functions of the body has been advocated.

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Functional asymmetry in the face

Cited by 109 publications

References 1 publication

Asymmetry in the skull

Asymmetry in the skull

Laterality of Asymmetry in Movements of the Corners of the Mouth during Voluntary Smile

Eyedness

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