A comparison of inhibition in orientation and spatial frequency selectivity of cat visual cortex - PubMed (original) (raw)
. 1986 May;321(6067):237-9.
doi: 10.1038/321237a0.
- PMID: 3713805
- DOI: 10.1038/321237a0
A comparison of inhibition in orientation and spatial frequency selectivity of cat visual cortex
A S Ramoa et al. Nature. 1986 May.
Abstract
Neurones in the visual cortex are highly selective for orientation and spatial frequency of visual stimuli. There is strong neurophysiological evidence that orientation selectivity is enhanced by inhibitory interconnections between columns in the cortex which have different orientation sensitivities, an idea which is supported by experiments using neuropharmacological manipulation or complex visual stimuli. It has also been proposed that selectivity for spatial frequency is mediated in part by a similar mechanism to that for orientation, although evidence for this is based on special use of visual stimuli, which hampers interpretation of the findings. We have therefore examined selectivity for both orientation and spatial frequency using a technique which allows direct inferences about inhibitory processes. Our method uses microiontophoresis of an excitatory amino acid to elevate maintained discharge of single neurones in the visual cortex. We then present visual stimuli both within and outside the range of orientations and spatial frequencies which cause a cell to respond with increased discharge. Our results show that orientations presented on either side of the responsive range usually produce clear suppression of maintained discharge. In marked contrast, spatial frequencies shown to either side of the responsive range have little or no effect on maintained activity. We conclude that there is an intracortical organization of inhibitory connections between cells tuned to different orientations but not different spatial frequencies.
Similar articles
- Orientation tuning of surround suppression in lateral geniculate nucleus and primary visual cortex of cat.
Naito T, Sadakane O, Okamoto M, Sato H. Naito T, et al. Neuroscience. 2007 Nov 23;149(4):962-75. doi: 10.1016/j.neuroscience.2007.08.001. Epub 2007 Aug 9. Neuroscience. 2007. PMID: 17945429 - Cat striate cortex: monocular and interocular comparisons of spatial-frequency selectivity.
Hammond P, Fothergill LK. Hammond P, et al. An Acad Bras Cienc. 1994 Mar;66(1):95-113. An Acad Bras Cienc. 1994. PMID: 7978693 - Bottom-up and top-down dynamics in visual cortex.
Schummers J, Sharma J, Sur M. Schummers J, et al. Prog Brain Res. 2005;149:65-81. doi: 10.1016/S0079-6123(05)49006-8. Prog Brain Res. 2005. PMID: 16226577 Review. - [Image processing in the primary visual cortex].
Sáez JA, Paniagua J, Domínguez I, Ferrer JM. Sáez JA, et al. Rev Neurol. 1998 Mar;26(151):439-44. Rev Neurol. 1998. PMID: 9585959 Review. Spanish.
Cited by
- The responses of V1 cortical neurons to flashed presentations of orthogonal single lines and edges.
Gawne TJ. Gawne TJ. J Neurophysiol. 2015 Apr 1;113(7):2676-81. doi: 10.1152/jn.00940.2014. Epub 2015 Feb 11. J Neurophysiol. 2015. PMID: 25673741 Free PMC article. - Neural mechanisms of coarse-to-fine discrimination in the visual cortex.
Purushothaman G, Chen X, Yampolsky D, Casagrande VA. Purushothaman G, et al. J Neurophysiol. 2014 Dec 1;112(11):2822-33. doi: 10.1152/jn.00612.2013. Epub 2014 Sep 10. J Neurophysiol. 2014. PMID: 25210162 Free PMC article. - Binocular neurons in parastriate cortex: interocular 'matching' of receptive field properties, eye dominance and strength of silent suppression.
Romo PA, Zeater N, Wang C, Dreher B. Romo PA, et al. PLoS One. 2014 Jun 13;9(6):e99600. doi: 10.1371/journal.pone.0099600. eCollection 2014. PLoS One. 2014. PMID: 24927276 Free PMC article. - Dynamics of spatial frequency tuning in macaque V1.
Bredfeldt CE, Ringach DL. Bredfeldt CE, et al. J Neurosci. 2002 Mar 1;22(5):1976-84. doi: 10.1523/JNEUROSCI.22-05-01976.2002. J Neurosci. 2002. PMID: 11880528 Free PMC article. - Mechanisms underlying orientation selectivity of neurons in the primary visual cortex of the macaque.
Sato H, Katsuyama N, Tamura H, Hata Y, Tsumoto T. Sato H, et al. J Physiol. 1996 Aug 1;494 ( Pt 3)(Pt 3):757-71. doi: 10.1113/jphysiol.1996.sp021530. J Physiol. 1996. PMID: 8865072 Free PMC article.
Publication types
MeSH terms
Substances
LinkOut - more resources
Full Text Sources
Miscellaneous