scholarly journals Synergistic center-surround receptive field model of monkey H1 horizontal cells

2005 ◽  
Vol 5 (11) ◽  
pp. 9 ◽  
Author(s):  
Orin S. Packer ◽  
Dennis M. Dacey
Keyword(s):  
Receptive Field ◽  
Field Model ◽  
Horizontal Cells

scholarly journals A population receptive field model of the magnetoencephalography response

NeuroImage ◽  
2021 ◽  
Vol 244 ◽  
pp. 118554
Author(s):  
Eline R. Kupers ◽  
Akhil Edadan ◽  
Noah C. Benson ◽  
Wietske Zuiderbaan ◽  
Maartje C. de Jong ◽  
...  
Keyword(s):  
Receptive Field ◽  
Field Model

Receptive field of the retinal bipolar cell: a pharmacological study in the tiger salamander

1996 ◽  
Vol 76 (3) ◽  
pp. 2005-2019 ◽  
Author(s):  
W. A. Hare ◽  
W. G. Owen
Keyword(s):  
Receptive Field ◽  
Gaba Receptors ◽  
Bipolar Cell ◽  
Horizontal Cell ◽  
Pharmacological Study ◽  
Bipolar Cells ◽  
Horizontal Cells ◽  
Gaba Uptake ◽  
Gamma Aminobutyric Acid ◽  
Gabaergic Synapse

1. It is widely believed that signals contributing to the receptive field surrounds of retinal bipolar cells pass from horizontal cells to bipolar cells via GABAergic synapses. To test this notion, we applied gamma-aminobutyric acid (GABA) agonists and antagonists to isolated, perfused retinas of the salamander Ambystoma tigrinum while recording intracellularly from bipolar cells, horizontal cells, and photoreceptors. 2. As we previously reported, administration of the GABA analogue D-aminovaleric acid in concert with picrotoxin did not block horizontal cell responses or the center responses of bipolar cells but blocked the surround responses of both on-center and off-center bipolar cells. 3. Surround responses were not blocked by the GABA, antagonists picrotoxin or bicuculline, the GABAB agonist baclofen or the GABAB antagonist phaclofen, and the GABAC antagonists picrotoxin or cis-4-aminocrotonic acid. Combinations of these drugs were similarly ineffective. 4. GABA itself activated a powerful GABA uptake mechanism in horizontal cells for which nipecotic acid is a competitive agonist. It also activated, both in horizontal cells and bipolar cells, large GABAA conductances that shunted light responses but that could be blocked by picrotoxin or bicuculline. 5. GABA, administered together with picrotoxin to block the shunting effect of GABAA activation, did not eliminate bipolar cell surround responses at concentrations sufficient to saturate the known types of GABA receptors. 6. Surround responses were not blocked by glycine or its antagonist strychnine, or by combinations of drugs designed to eliminate GABAergic and glycinergic pathways simultaneously. 7. Although we cannot fully discount the involvement of a novel GABAergic synapse, the simplest explanation of our findings is that the primary pathway mediating the bipolar cell's surround is neither GABAergic nor glycinergic.

Strongly pH-Buffered Ringer's Solution Expands the Receptive Field Size of Horizontal Cells in the Carp Retina

2008 ◽  
Vol 25 (4) ◽  
pp. 419-427 ◽  
Author(s):  
Kazunori Yamamoto ◽  
Hiroshi Jouhou ◽  
Masanori Iwasaki ◽  
Akimichi Kaneko ◽  
Masahiro Yamada
Keyword(s):  
Receptive Field ◽  
Horizontal Cells ◽  
Field Size ◽  
Receptive Field Size ◽  
Ringer’S Solution

scholarly journals Distinguishing Hemodynamics from Function in the Human LGN Using a Temporal Response Model

Vision ◽  
2019 ◽  
Vol 3 (2) ◽  
pp. 27 ◽  
Author(s):  
Kevin DeSimone ◽  
Keith A. Schneider
Keyword(s):  
Receptive Field ◽  
Visual Processing ◽  
Field Model ◽  
Ventral Surface ◽  
Impulse Response Functions ◽  
Response Model ◽  
Response Functions ◽  
Temporal Response ◽  
Point Of Entry ◽  
Temporal Properties

We developed a temporal population receptive field model to differentiate the neural and hemodynamic response functions (HRF) in the human lateral geniculate nucleus (LGN). The HRF in the human LGN is dominated by the richly vascularized hilum, a structure that serves as a point of entry for blood vessels entering the LGN and supplying the substrates of central vision. The location of the hilum along the ventral surface of the LGN and the resulting gradient in the amplitude of the HRF across the extent of the LGN have made it difficult to segment the human LGN into its more interesting magnocellular and parvocellular regions that represent two distinct visual processing streams. Here, we show that an intrinsic clustering of the LGN responses to a variety of visual inputs reveals the hilum, and further, that this clustering is dominated by the amplitude of the HRF. We introduced a temporal population receptive field model that includes separate sustained and transient temporal impulse response functions that vary on a much short timescale than the HRF. When we account for the HRF amplitude, we demonstrate that this temporal response model is able to functionally segregate the residual responses according to their temporal properties.

scholarly journals Receptive field structure of H1 horizontal cells in macaque monkey retina

10.1167/2.4.1 ◽  
2002 ◽  
Vol 2 (4) ◽  
pp. 1 ◽  
Author(s):  
Orin S. Packer ◽  
Dennis M. Dacey
Keyword(s):  
Receptive Field ◽  
Macaque Monkey ◽  
Field Structure ◽  
Horizontal Cells

Activation of a regenerative calcium conductance in turtle cones by peripheral stimulation

1978 ◽  
Vol 201 (1144) ◽  
pp. 309-315 ◽  
Keyword(s):  
Receptive Field ◽  
Horizontal Cells ◽  
Light Stimulation ◽  
Calcium Conductance ◽  
Peripheral Stimulation ◽  
Stimulation Of

Light stimulation of the periphery of the receptive field of some turtle cones evokes spikes which are tetrodotoxin-insensitive. In all cones, Sr 2+ or Ba 2+ ions (4–2 mM) induce the appearance of spikes in response to pheripheral illumination. These spikes are blocked by Co 2+ ions and by agents which depolarize the L-horizontal cells and block their responses. It is concluded that peripheral illumination evokes Ca 2+ spikes in turtle cones through a feed-back synaptic mechanism from the L-horizontal cells.

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