Das menschliche Hirngewicht und seine Abh�ngigkeit von Lebensalter, K�rperl�nge, Todesursache und Beruf

Spann, W; Dustmann, H. O.

doi:10.1007/bf00574453

Cited by 15 publications

(9 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Brain weight has been shown to be correlated with body length (Spann and Dustmann 1965;Dekaban and Sadowsky 1978;Ho et al 1980 a, b). Since young adults of the 1990s are generally taller than their great-grandparents, the decreased brain weight and probably decreased neurone number in old people results from the combined effect of smaller body size and age-related parenchymal loss.…”

Section: Age-related Nerve Cell Lossmentioning

confidence: 99%

Quantitative investigations on the human entorhinal area: left-right asymmetry and age-related changes

Heinsen¹,

Henn

Eisenmenger³

et al. 1994

Anat Embryol

View full text Add to dashboard Cite

Abstract.The total nerve cell numbers in the right and in the left human entorhinal areas have been calculated by volume estimations with the Cavalieri principle and by cell density determinations with the optical disector. Thick gallocyanin-stained serial frozen sections through the parahippocampal gyrus of 22 human subjects (10 female, 12 male) ranging from 18 to 86 years were analysed. The laminar composition of gallocyanin (Nissl)-stained sections could easily be compared with Braak's (1972Braak's ( , 1980 pigmentoarchitectonic study, and Braak's nomenclature of the entorhinal laminas was adopted. Cellsparse laminae dissecantes can more clearly be distinguished in Nissl than in aldehydefuchsin preparations. These cell-poor dissecantes, lamina dissecans externa (dis-ext), lamina dissecans 1 (dis-l) and lamina dissecans 2 (dis-2), were excluded from nerve cell number determinations. An exact delineation of the entorhinal area is indispensable for any kind of quantitative investigation. We have defined the entorhinal area by the presence of pre-alpha cell clusters and the deeper layers of lamina principalis externa (pre-beta and gamma) separated from lamina principalis interna (pri) by lamina dissecans 1 (dis-l). The human entorhinal area is quantitatively characterized by a left-sided (asymmetric) higher pre-alpha cell number and an age-related nerve cell loss in pre as well as pri layers. At variance with other CNS cortical and subcortical structures, the neuronal number of the entorhinal area appears to decrease continuously from the earliest stages analysed, although a secular trend has to be considered. The asymmetry in pre-alpha cell number is discussed in the context of higher human mental capabilities, especially language.

show abstract

Section: Age-related Nerve Cell Lossmentioning

confidence: 99%

Quantitative investigations on the human entorhinal area: left-right asymmetry and age-related changes

Heinsen¹,

Henn

Eisenmenger³

et al. 1994

Anat Embryol

View full text Add to dashboard Cite

show abstract

“…Matiegka [1902] found the mean brain size of unskilled workers to be lower than that of academics, but did not control for the effects of body size. Spann and Dustmann [1965] also compared the brain weights of different groups, unskilled, skilled, professional and academic. Mean brain size was largest in the academics and lowest in the unskilled.…”

Section: Brain Sizementioning

confidence: 99%

“…Matters such as these can hardly in spire confidence in the range of 'normal' brain weights that is so often re peated from Pearson1 s [1925J and earlier accounts. It is all the more strange that they should still be quoted when modern data on the distribu tion of brain sizes with large samples are available [e.g., Appel and A p pel, 1942;Pakkenberg and Voigt, 1964;Spann and Dustmann, 1965].…”

mentioning

confidence: 99%

Brain Size and Intelligence in Man

Passingham¹

1979

Brain Behav Evol

View full text Add to dashboard Cite

The relationship between brain size and intelligence was investigated in two ways. Cranial capacity was measured in people with known IQs. A very small correlation was found between cranial capacity and intelligence; but this was shown to be the result of the confounding effects of height. A large series of brains was also investigated, data being obtained on occupation from the case notes. When the effects of body height and weight were controlled for, it was possible to demonstrate a statistically significant, but very slight, relation between brain size and occupational group.

show abstract

“…To exclude the effects of the age and body size differences -including sex -we used a control for age and body height (measured in cm). The fact that brain size decreases with age is well-known (Dekaban and Sadowsky, 1978;Witelson, Beresh, and Kigar, 2006), while the relationship between body height and brain size is more controversial (Spann and Dustmann, 1965;Witelson, Beresh, and Kigar, 2006). We expected positive correlations between the above areas and the Sociability score.…”

Section: Discussionmentioning

confidence: 72%

Is the social brain theory applicable to human individual differences? Relationship between Sociability personality dimension and brain size

Horváth

Martos

Mihalik

et al. 2010

International Journal of Psychophysiology

View full text Add to dashboard Cite

Abstract:Our study intends to examine whether the social brain theory is applicable to human individual differences. According to the social brain theory primates have larger brains as it could be expected from their body sizes due to the adaptation to a more complex social life. Regarding humans there were few studies about the relationship between theory of mind and frontal and temporal brain lobes. We hypothesized that these brain lobes, as well as the whole cerebrum and neocortex are in connection with the Sociability personality dimension that is associated with individuals' social lives. Our findings support this hypothesis as Sociability correlated positively with the examined brain structures if we control the effects of body size differences and age. These results suggest that the social brain theory can be extended to human interindividual differences and they have some implications to personality psychology too.

show abstract

Das menschliche Hirngewicht und seine Abh�ngigkeit von Lebensalter, K�rperl�nge, Todesursache und Beruf

Cited by 15 publications

References 2 publications

Quantitative investigations on the human entorhinal area: left-right asymmetry and age-related changes

Quantitative investigations on the human entorhinal area: left-right asymmetry and age-related changes

Brain Size and Intelligence in Man

Is the social brain theory applicable to human individual differences? Relationship between Sociability personality dimension and brain size

Contact Info

Product

Resources

About