Two-photon imaging evidence for spatial frequency and orientation tuning in macaque V1
نویسندگان
چکیده
منابع مشابه
Correlation of local and global orientation and spatial frequency tuning in macaque V1.
Visual cortical neurones display a variety of visual properties. Among those that emerge in the primary visual cortex V1 are sharpening of selectivity for spatial frequency and for orientation. The selectivity for these stimulus attributes can be measured around the peak of the tuning function, usually as bandwidth. Other selectivity measures take into account the response across a broader rang...
متن کاملDynamics of spatial frequency tuning in macaque V1.
Spatial frequency tuning in the lateral geniculate nucleus of the thalamus (LGN) and primary visual cortex (V1) differ substantially. LGN responses are largely low-pass in spatial frequency, whereas the majority of V1 neurons have bandpass characteristics. To study this transformation in spatial selectivity, we measured the dynamics of spatial frequency tuning using a reverse correlation techni...
متن کاملSpatial frequency and orientation tuning dynamics in area V1.
Spatial frequency (SF) and orientation tuning are intrinsic properties of neurons in primary visual cortex (area V1). To investigate the neural mechanisms mediating selectivity in the awake animal, we measured the temporal dynamics of SF and orientation tuning. We adapted a high-speed reverse-correlation method previously used to characterize orientation tuning dynamics in anesthetized animals ...
متن کاملNonlinearity of two-photon Ca2+ imaging yields distorted measurements of tuning for V1 neuronal populations.
We studied the relative accuracy of drifting gratings and noise stimuli for functionally characterizing neural populations using two-photon calcium imaging. Calcium imaging has the potential to distort measurements due to nonlinearity in the conversion from spikes to observed fluorescence. We demonstrate a dramatic impact of fluorescence saturation on functional measurements in ferret V1 by sho...
متن کاملNonlinearity of two-photon Ca imaging yields distorted measurements of tuning for V1 neuronal populations
Nauhaus I, Nielsen KJ, Callaway EM. Nonlinearity of twophoton Ca imaging yields distorted measurements of tuning for V1 neuronal populations. J Neurophysiol 107: 923–936, 2012. First published November 23, 2011; doi:10.1152/jn.00725.2011.—We studied the relative accuracy of drifting gratings and noise stimuli for functionally characterizing neural populations using two-photon calcium imaging. C...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2018
ISSN: 1534-7362
DOI: 10.1167/18.10.24