然而,V1区对这种刺激产生响应的机制是不清楚的。本文揭示了来自高级视皮层到V1的反馈投射奠定了这种响应的神经基础,其所生成的感受野定义为第二感受野,又被称为反馈感受野(Feedback Receptive Field,fbRF)。 Fig. 1 前馈感受野 MethodsandDiscoveries: 1.使用老鼠作为实验对象,并将其头部固定,使用双光子钙成像方法对...
Beyond the classical receptive field in the visual cortex. Prog Brain Res 134: 157-170, 2001.R. D. Freeman, I. Ohzawa, and G. A. Walker, “Beyond the classical receptive field in the visual cortex,” Prog. Brain Res. , 134 , 157–170 (2001)....
Development differentially sculpts receptive fields across early and high-level human visual cortexReceptive fields (RFs) processing information in restricted parts of the visual field are a key property of visual system neurons. However, how RFs develop in humans is unknown. Using fMRI and ...
State-dependent receptive-field restructuring in the visual cortex.Presents research which studied the shape of receptive fields in the primary visual cortex of cats. Adaptation of the visual system to environmental stimulus; Dynamic control of visual resolution; Response of individual cells in the ...
Visual stimuli presented in the central receptive field cause the neuron to respond by increased firing whereas stimuli presented in the surround are by themselves subthreshold but can modulate the response to a central stimulus1,2,3,4. The dynamics of the centre-surround constellation can be ...
Receptive fields, binocular interaction and functional architecture in the cat's visual cortex [40] R Fieldsfunctional,SOR Related,R Fieldsfunctional,... 被引量: 0发表: 0年 The binocular organization of complex cells in the cat's visual cortex We have studied the manner by which inputs from...
Representation of the visual field in the lateral intraparietal area of macaque monkeys: a quantitative receptive field analysis Parietal cortex Monkey Electrophysiology Receptive field Visual representationThe representation of the visual field in the primate lateral intraparietal area (LIP... SB Hamed,JR...
In order to obtain insights into the mechanisms by which the cells in primary visual cortex generate their receptive field properties, we have investigated the intrinsic cortical circuitry by intracellular recording and dye injection. The dye injection technique in combination with 3-dimensional computer...
For the case of semilinear models, model behavior is well understood: correlations determine receptive field structure, intracortical interactions determine projective field structure, and the "knitting together" of the two determines the cortical map. This provides a basis for simple but powerful ...
Here, we measured neuronal RFs with intracranial local field potentials (LFPs) and spiking activity in human visual cortex (V1/V2/V3). We recorded LFPs via macro-contacts and discovered that RF sizes estimated from low-frequency activity (LFA, 0.5–30 Hz) were larger than those estimated...