Upper limb kinesthetic asymmetries: gender and handedness effects. 2012

Diane E Adamo, and Samantha Scotland, and Bernard J Martin
Department of Health Care Sciences, Wayne State University, 259 Mack Av., Detroit, MI 48201, USA. dadamo@wayne.edu

Proprioceptive and motor information contribute to movement representation; however, the equivalence of homologous contralateral sensorimotor processes as a function of gender and handedness has received little attention. The present work investigated asymmetry in contralateral reproductions of movements elicited by tendon vibration in right and left handed young adults of both genders. With eyes closed, illusions of elbow flexion movement elicited by a 100 Hz vibration applied to the distal tendon of the right or left triceps muscle were matched concurrently with the opposite limb. Overall, movement velocity was larger for females than males, asymmetric and handedness dependent in males. Conversely, consistent symmetry was found between left and right-handed females. These findings lead us to suggest that hand preference and gender contribute to differences in movement representation that may result from the combination of cortical structural differences and information processing specific to each hemisphere and gender.

UI MeSH Term Description Entries
D007699 Kinesthesis Sense of movement of a part of the body, such as movement of fingers, elbows, knees, limbs, or weights. Kinesthesia,Kinesthetic Sense,Movement Sensation,Kinestheses,Kinesthesias,Kinesthetic Senses,Movement Sensations
D007839 Functional Laterality Behavioral manifestations of cerebral dominance in which there is preferential use and superior functioning of either the left or the right side, as in the preferred use of the right hand or right foot. Ambidexterity,Behavioral Laterality,Handedness,Laterality of Motor Control,Mirror Writing,Laterality, Behavioral,Laterality, Functional,Mirror Writings,Motor Control Laterality,Writing, Mirror,Writings, Mirror
D008297 Male Males
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D012727 Sex Characteristics Those characteristics that distinguish one SEX from the other. The primary sex characteristics are the OVARIES and TESTES and their related hormones. Secondary sex characteristics are those which are masculine or feminine but not directly related to reproduction. Gender Characteristics,Gender Differences,Gender Dimorphism,Sex Differences,Sex Dimorphism,Sexual Dichromatism,Sexual Dimorphism,Characteristic, Gender,Characteristic, Sex,Dichromatism, Sexual,Dichromatisms, Sexual,Difference, Sex,Dimorphism, Gender,Dimorphism, Sex,Dimorphism, Sexual,Gender Characteristic,Gender Difference,Gender Dimorphisms,Sex Characteristic,Sex Difference,Sex Dimorphisms,Sexual Dichromatisms,Sexual Dimorphisms
D055815 Young Adult A person between 19 and 24 years of age. Adult, Young,Adults, Young,Young Adults
D034941 Upper Extremity The region of the upper limb in animals, extending from the deltoid region to the HAND, and including the ARM; AXILLA; and SHOULDER. Extremity, Upper,Membrum superius,Upper Limb,Extremities, Upper,Limb, Upper,Limbs, Upper,Upper Extremities,Upper Limbs

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