Results 11 to 20 of about 1,585,655 (272)

Auxin inhibits expansion rate independently of cortical microtubules [PDF]

Trends in Plant Science, 2015
A recent publication announces that auxin inhibits expansion by a mechanism based on the orientation of cortical microtubules. This is a textbook-revising claim, but as I argue here, a claim that is supported by neither the authors' data nor previous research, and is contradicted by a simple experiment.
Baskin, Tobias Isaac
core   +6 more sources

Differential Tangential Expansion as a Mechanism for Cortical Gyrification [PDF]

Cerebral Cortex, 2013
Gyrification, the developmental buckling of the cortex, is not a random process-the forces that mediate expansion do so in such a way as to generate consistent patterns of folds across individuals and even species. Although the origin of these forces is unknown, some theories have suggested that they may be related to external cortical factors such as ...
Ronan, Lisa, Voets, Natalie, Rua, Catarina, Alexander-Bloch, Aaron, Hough, Morgan, Mackay, Clare, Crow, Tim J, James, Anthony, Giedd, Jay N, Fletcher, Paul C   +9 more
openaire   +7 more sources

Differential responsiveness of cortical microtubule orientation to suppression of cell expansion among the developmental zones of Arabidopsis thaliana root apex. [PDF]

PLoS ONE, 2013
Τhe bidirectional relationship between cortical microtubule orientation and cell wall structure has been extensively studied in elongating cells. Nevertheless, the possible interplay between microtubules and cell wall elements in meristematic cells still
Emmanuel Panteris, Ioannis-Dimosthenis S Adamakis, Gerasimos Daras, Polydefkis Hatzopoulos, Stamatis Rigas   +4 more
doaj   +2 more sources

Gyrification from constrained cortical expansion. [PDF]

Proc Natl Acad Sci U S A, 2014
Significance The convolutions of the human brain are a symbol of its functional complexity and correlated with its information-processing capacity. Conversely, loss of folds is correlated with loss of function. But how did the outer surface of the brain, the layered cortex of neuronal gray matter, get its folds?
Tallinen T, Chung JY, Biggins JS, Mahadevan L.   +3 more
europepmc   +7 more sources

Similar patterns of cortical expansion during human development and evolution [PDF]

Proceedings of the National Academy of Sciences, 2010
The cerebral cortex of the human infant at term is complexly folded in a similar fashion to adult cortex but has only one third the total surface area. By comparing 12 healthy infants born at term with 12 healthy young adults, we demonstrate that postnatal cortical expansion is strikingly nonuniform: regions of lateral temporal, parietal, and frontal ...
Jason, Hill, Terrie, Inder, Jeffrey, Neil, Donna, Dierker, John, Harwell, David, Van Essen   +5 more
openaire   +3 more sources

Stafne's Defect with Buccal Cortical Expansion: A Case Report [PDF]

International Journal of Dentistry, 2010
A rare case of Stafne's bone cavity, type III-G, is reported in a 49-year-old male patient who had been referred to a private clinic for a routine evaluation. The final diagnosis was based on computed tomography. Scintigraphy played a fundamental role in
Paulo Sérgio Flores Campos, José Aloysio Carvalho Oliveira, Janaina Araújo Dantas, Daniela Pita de Melo, Nilson Pena, Luís Antônio Nogueira Santos, Iêda Margarida Rocha Crusoé-Rebello   +6 more
doaj   +4 more sources

Asymmetrical cortical processing of radial expansion / contraction in infants and adults

Developmental Science, 2009
AbstractWe report asymmetrical cortical responses (steady‐state visual evoked potentials) to radial expansion and contraction in human infants and adults. Forty‐four infants (22 3‐month‐olds and 22 4‐month‐olds) and nine adults viewed dynamic dot patterns which cyclically (2.1 Hz) alternate between radial expansion (or contraction) and random ...
Shirai, N, Birtles, D, Wattam-Bell, J, Yamaguchi, M, Kanazawa, S, Atkinson, J, Braddick, O   +6 more
openaire   +3 more sources

Developmental overproduction of cortical superficial neurons impairs adult auditory cortical processing

Scientific Reports
While evolutionary cortical expansion is thought to underlie the evolution of human cognitive capabilities, excessive developmental expansion can lead to megalencephaly, often found in neurodevelopmental disorders.
Mirna Merkler, Nancy Y. Ip, Shuzo Sakata
doaj   +2 more sources

An Evolved Human-specific Epigenetic Mechanism for Cortical Expansion and Gyrification. [PDF]

Neurosci Bull, 2021
Li D, Xie Y.
europepmc   +3 more sources

A Human-Specific De Novo Gene Promotes Cortical Expansion and Folding. [PDF]

Adv Sci (Weinh), 2023
AbstractNewly originated de novo genes have been linked to the formation and function of the human brain. However, how a specific gene originates from ancestral noncoding DNAs and becomes involved in the preexisting network for functional outcomes remains elusive.
Qi J, Mo F, An NA, Mi T, Wang J, Qi JT, Li X, Zhang B, Xia L, Lu Y, Sun G, Wang X, Li CY, Hu B.   +13 more
europepmc   +4 more sources