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Spontaneously emerging cortical representations of visual attributes.
Kenet T, Bibitchkov D, Tsodyks M, Grinvald A, Arieli A. Kenet T, et al. Nature. 2003 Oct 30;425(6961):954-6. doi: 10.1038/nature02078. Nature. 2003. PMID: 14586468
Using voltage sensitive dye imaging, we previously established a close link between ongoing activity in the visual cortex of anaesthetized cats and the spontaneous firing of a single neuron. ...When such an orientation state emerged spontaneously, it spanned several …
Using voltage sensitive dye imaging, we previously established a close link between ongoing activity in the visual cortex of anaesthe …
Interhemispheric Synchrony of Spontaneous Cortical States at the Cortical Column Level.
O'Hashi K, Fekete T, Deneux T, Hildesheim R, van Leeuwen C, Grinvald A. O'Hashi K, et al. Among authors: grinvald a. Cereb Cortex. 2018 May 1;28(5):1794-1807. doi: 10.1093/cercor/bhx090. Cereb Cortex. 2018. PMID: 28419208
Embedding of cortical representations by the superficial patch system.
Muir DR, Da Costa NM, Girardin CC, Naaman S, Omer DB, Ruesch E, Grinvald A, Douglas RJ. Muir DR, et al. Cereb Cortex. 2011 Oct;21(10):2244-60. doi: 10.1093/cercor/bhq290. Epub 2011 Mar 7. Cereb Cortex. 2011. PMID: 21383233 Free PMC article.
Pyramidal cells in layers 2 and 3 of the neocortex of many species collectively form a clustered system of lateral axonal projections (the superficial patch system--Lund JS, Angelucci A, Bressloff PC. 2003. ...This relationship is consistent with the spontaneous eme …
Pyramidal cells in layers 2 and 3 of the neocortex of many species collectively form a clustered system of lateral axonal projections …
Imaging spatiotemporal dynamics of surround inhibition in the barrels somatosensory cortex.
Derdikman D, Hildesheim R, Ahissar E, Arieli A, Grinvald A. Derdikman D, et al. J Neurosci. 2003 Apr 15;23(8):3100-5. doi: 10.1523/JNEUROSCI.23-08-03100.2003. J Neurosci. 2003. PMID: 12716915 Free PMC article.
We found that the motion of a single whisker evoked a cortical response exhibiting either one or three phases. During a triphasic response, there was first a cortical depolarization in a small cortical region the size of a single cortical …
We found that the motion of a single whisker evoked a cortical response exhibiting either one or three phases. During a
Arousal increases the representational capacity of cortical tissue.
Fekete T, Pitowsky I, Grinvald A, Omer DB. Fekete T, et al. J Comput Neurosci. 2009 Oct;27(2):211-27. doi: 10.1007/s10827-009-0138-6. Epub 2009 Mar 27. J Comput Neurosci. 2009. PMID: 19326198
We argue that representational capacity is of a dual nature-it requires not only that cortical tissue generate complex activity (i.e. spatiotemporal neuronal events), but also a complex cortical activity space (which is comprised of such spatiotemporal events). ...M …
We argue that representational capacity is of a dual nature-it requires not only that cortical tissue generate complex activity (i.e. …
Removal of spatial biological artifacts in functional maps by local similarity minimization.
Fekete T, Omer DB, Naaman S, Grinvald A. Fekete T, et al. J Neurosci Methods. 2009 Mar 30;178(1):31-9. doi: 10.1016/j.jneumeth.2008.11.020. Epub 2008 Dec 3. J Neurosci Methods. 2009. PMID: 19101591
Here we propose a simple algorithm that efficiently removes spatial biological artifacts contaminating high-resolution functional maps. ...To remove vascular spatial patterns we first constructed a template of typical artifacts (vascular/cardiac pulsation/vasomotion …
Here we propose a simple algorithm that efficiently removes spatial biological artifacts contaminating high-resolution functional map …
Cortical response field dynamics in cat visual cortex.
Sharon D, Jancke D, Chavane F, Na'aman S, Grinvald A. Sharon D, et al. Cereb Cortex. 2007 Dec;17(12):2866-77. doi: 10.1093/cercor/bhm019. Epub 2007 Mar 29. Cereb Cortex. 2007. PMID: 17395608
We found that the cortical response field was often characterized by a plateau of activity, beyond the rim of which activity diminished quickly. ...Thus, alongside selective amplification of a spatially restricted suprathreshold response, wider activation to just be …
We found that the cortical response field was often characterized by a plateau of activity, beyond the rim of which activity diminish …
Compartment-resolved imaging of activity-dependent dynamics of cortical blood volume and oximetry.
Vanzetta I, Hildesheim R, Grinvald A. Vanzetta I, et al. J Neurosci. 2005 Mar 2;25(9):2233-44. doi: 10.1523/JNEUROSCI.3032-04.2005. J Neurosci. 2005. PMID: 15745949 Free PMC article.
To avoid the confounding effects of hematocrit and oximetry changes, we developed and used a new fluorescent blood plasma tracer and combined these measurements with optical imaging of intrinsic signals at a near-isosbestic wavelength for hemoglobin (565 nm). ...Inf …
To avoid the confounding effects of hematocrit and oximetry changes, we developed and used a new fluorescent blood plasma tracer and …
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