Asymmetrical Relationships Between the Right and Left Heights of the Sylvian End Points in Right- and Left-Pawed Male and Female Cats: Similarities with Planum Temporale Asymmetries in Human Brain

Asymmetry in the height of the right (R) and left (L) Sylvian end points was studied in right- (RH) and left-pawed (LH) male and female cats. Sylvian height was described relatively to brain weight. An asymmetry coefficient (AC) was estimated (R - L/.5*R + L). There was no significant relationship b...

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Veröffentlicht in:International journal of neuroscience 1992, Vol.67 (1-4), p.81-91
Hauptverfasser: Tan, Üner, Kutlu, Necíp
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description Asymmetry in the height of the right (R) and left (L) Sylvian end points was studied in right- (RH) and left-pawed (LH) male and female cats. Sylvian height was described relatively to brain weight. An asymmetry coefficient (AC) was estimated (R - L/.5*R + L). There was no significant relationship between R + L Sylvian height and AC, in the total sample and in AC- (leftward asymmetry) brains. In AC+ brains (rightward asymmetry), R + L Sylvian height showed an inverse correlation with AC in RH cats, and a direct correlation in LH cats. There was an inverse correlation between left Sylvian height and AC in RH cats, but no correlation in LH cats. There was a direct correlation between right and left Sylvian height and AC. In AC- brains, left Sylvian height had no relation to AC, but there was a direct correlation between right Sylvian height and AC. In AC+ brains, left Sylvian height showed an inverse correlation with AC in RH males and females; a direct correlation only in LH male cats. Right Sylvian height showed a direct relation to AC+ values in RH and LH males and LH females (no correlation in RH females). The results supported the generalization that a brain symmetrical in a given region has more combined cortex than a brain that is asymmetrical for this region, only for RH cats, however (Galaburda et al., 1987).
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Sylvian height was described relatively to brain weight. An asymmetry coefficient (AC) was estimated (R - L/.5*R + L). There was no significant relationship between R + L Sylvian height and AC, in the total sample and in AC- (leftward asymmetry) brains. In AC+ brains (rightward asymmetry), R + L Sylvian height showed an inverse correlation with AC in RH cats, and a direct correlation in LH cats. There was an inverse correlation between left Sylvian height and AC in RH cats, but no correlation in LH cats. There was a direct correlation between right and left Sylvian height and AC. In AC- brains, left Sylvian height had no relation to AC, but there was a direct correlation between right Sylvian height and AC. In AC+ brains, left Sylvian height showed an inverse correlation with AC in RH males and females; a direct correlation only in LH male cats. Right Sylvian height showed a direct relation to AC+ values in RH and LH males and LH females (no correlation in RH females). 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Psychology</topic><topic>Humans</topic><topic>Male</topic><topic>Models, Biological</topic><topic>Psychology. Psychoanalysis. Psychiatry</topic><topic>Psychology. Psychophysiology</topic><topic>Sex Factors</topic><topic>Sylvian fissure</topic><topic>Testosterone - physiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tan, Üner</creatorcontrib><creatorcontrib>Kutlu, Necíp</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>International journal of neuroscience</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tan, Üner</au><au>Kutlu, Necíp</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Asymmetrical Relationships Between the Right and Left Heights of the Sylvian End Points in Right- and Left-Pawed Male and Female Cats: Similarities with Planum Temporale Asymmetries in Human Brain</atitle><jtitle>International journal of neuroscience</jtitle><addtitle>Int J Neurosci</addtitle><date>1992</date><risdate>1992</risdate><volume>67</volume><issue>1-4</issue><spage>81</spage><epage>91</epage><pages>81-91</pages><issn>0020-7454</issn><eissn>1563-5279</eissn><eissn>1543-5245</eissn><coden>IJNUB7</coden><abstract>Asymmetry in the height of the right (R) and left (L) Sylvian end points was studied in right- (RH) and left-pawed (LH) male and female cats. 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subjects Anatomical correlates of behavior
Animals
Behavioral psychophysiology
Biological and medical sciences
brain
Brain - anatomy & histology
Brain - physiology
cat
Cats - anatomy & histology
Cerebral Cortex - anatomy & histology
Cerebral Cortex - physiology
cerebral lateralizatio
Estrogens - physiology
Female
Functional Laterality - physiology
Fundamental and applied biological sciences. Psychology
Humans
Male
Models, Biological
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Sex Factors
Sylvian fissure
Testosterone - physiology
title Asymmetrical Relationships Between the Right and Left Heights of the Sylvian End Points in Right- and Left-Pawed Male and Female Cats: Similarities with Planum Temporale Asymmetries in Human Brain
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