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Publikováno v:
Cerebral Cortex. 13:15-24
In this review we re-examine the concept of a cortical column in macaque primary visual cortex, and consider to what extent a functionally defined column reflects any sort of anatomical entity that subdivides cortical territory. Functional studies ha
Autor:
Jean Bullier, Jonathan B. Levitt, Alessandra Angelucci, Emma J S Walton, Jennifer S. Lund, Jean-Michel Hupé
Publikováno v:
The Journal of Neuroscience. 22:8633-8646
Contrast-dependent changes in spatial summation and contextual modulation of primary visual cortex (V1) neuron responses to stimulation of their receptive field reveal long-distance integration of visual signals within V1, well beyond the classical r
Autor:
Jennifer S. Lund
Publikováno v:
Journal of Neurocytology. 31:203-209
It is clear from reviewing the findings of our own studies and those of others that the cerebral cortex has combined two very different strategies of organisation. Firstly it has a strictly defined genetically determined substrate of specific neurons
Publikováno v:
Visual Neuroscience. 16:303-318
We report results of numerical simulations for a model of generation of orientation selectivity in macaque striate cortex. In contrast to previous models, where the initial orientation bias is generated by convergent geniculate input to simple cells
Publikováno v:
Vision Research. 39(3):613-629
A model of LGN-input to layer 4C of macaque primary visual cortex has been used to test the hypothesis that feedforward convergence of P- and M-inputs onto layer 4C spiny stellate neurons is sufficient to explain the observed gradual change in recept
Autor:
Lyn Beazley, J.F. Dann, Sarah A. Dunlop, Raymond D. Lund, C.J. Tyler, Alison M. Harman, Jennifer S. Lund
Publikováno v:
The Journal of Comparative Neurology. 400:449-468
This study identifies fundamental anatomical features of primary visual cortex, area V1 of macaque monkey cerebral cortex, i.e., features that are present in area V1 of phylogenetically distant mammals of quite different lifestyle and features that a
Publikováno v:
The Journal of Comparative Neurology. 384:109-126
We continue an investigation of the organization of local circuit neurons (largely inhibitory, GABAergic neurons, with smooth or sparsely spined dendrites) in the primary visual cortex of macaque monkey (Lund, '87: J. Comp. Neurol. 257:60-92; Lund et
Autor:
Jonathan B. Levitt, Jennifer S. Lund
Publikováno v:
Nature. 387:73-76
The responses of neurons in the visual cortex to stimuli presented within their receptive fields can be markedly modulated by stimuli presented in surrounding regions that do not themselves evoke responses1–7. This modulation depends on the relativ
Publikováno v:
The Journal of Comparative Neurology. 376:614-630
Both local and long-range connections are critical mediators of information processing in the cerebral cortex, but little is known about the relationships among these types of connections, especially in higher-order cortical regions. We used quantita