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    Wyświetlanie 1-2 z 2
    Tytuł:
    Influence of physical activity and cardiorespiratory fitness on brain structure and functioning: a review
    Autorzy:
    Gąsiewski, Tomasz Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/1031745.pdf
    Data publikacji:
    2017
    Wydawca:
    PPHU Projack Jacek Wąsik
    Tematy:
    BDNF
    CRF
    brain structure
    cognitive functioning
    fitness
    physical activity
    Opis:
    Positive correlations between physical activity and fitness with psychological benefits have been reported for many decades. Currently available novel neuroimaging techniques enable comparison and assessment of collected data, creating an opportunity to draw conclusions on the effectiveness of different types of exercise on improving brain functioning and health. There is a strong correlation between frequency of physical activity across the lifespan and benefits for brain functioning and volume. Aerobic physical activity, as the most thoroughly investigated type of exercise, comes out as the most beneficial for increasi ng brain volume and enhancing cognitive functions. It is also effective for raising the levels of cardiorespiratory fitness (CRF). However, sedentary lifestyle may diminish positive influence of physical activity and seems to be a crucial negative factor f or maintaining brain health.
    Źródło:
    Physical Activity Review; 2017, 5; 19-28
    2300-5076
    Pojawia się w:
    Physical Activity Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new reconstruction of multituberculate endocranial casts and encephalization quotient of Kryptobaatar
    Autorzy:
    Kielan-Jaworowska, Z
    Lancaster, T.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/21906.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    brain structure
    multituberculata
    Late Cretaceous
    Mongolia
    body mass
    Kryptobaatar
    new reconstruction
    endocast
    encephalization quotient
    Multituberculata
    paleontology
    Opis:
    Multituberculate and eutriconodontan endocasts differ from those of primitive therian mammals in their lack of visible midbrain exposure on the dorsal side and in having a vermis−like triangular bulge (recognized herein as the cast of a large sinus—the superior cistern) inserted between the cerebral hemispheres. As the shape and proportions of multituberculate, eutriconodontan, and Cretaceous eutherian endocasts are otherwise similar, one might speculate that the multituberculate and eutriconodontan brains did not differ essentially from those of primitive eutherian and marsupial mammals, in which the midbrain is exposed dorsally. This conclusion might have important phylogenetic implications, as multituberculates and eutriconodontans may lay closer to the therians sensu strico, than hitherto believed. We describe an endocast of the Late Cretaceous multituberculate Kryptobaatar, which differs from those of other multituberculates (Ptilodus, Chulsanbaatar, and Nemegtbaatar) in having unusually long olfactory bulbs and the paraflocculi elongated transversely, rather than ball−shaped. We estimate the encephalization quotient (EQ) of Kryptobaatar, using: 1) Jerison’s classical equation (1) based on estimation of endocranial volume and body mass; 2) McDermott et al.’s derived body mass estimation equation (2) using upper molar lengths; and 3) estimation of body mass based on new equations (3a, 3b, 3c, and 3d₁₋₉), which we propose, using measurements of the humerus, radius, ulna, femur and tibia. In both Jerison’s method and a mean of our series of derived formulae, the EQ varies around 0.71, which is higher than estimated for other multituberculate mammals. It remains an open question whether the evolutionary success of Kryptobaatar(which was a dominant mammal during the ?early Campanian on the Gobi Desert and survived until the ?late Campanian) might have been related to its relatively high EQ and well developed sensorimotor adaptations, in particular olfaction and coordinated movements.
    Źródło:
    Acta Palaeontologica Polonica; 2004, 49, 2
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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