441. Budd JM and Kisvárday ZF. (2001) Local lateral connectivity of inhibitory clutch cells in layer 4 of cat visual cortex (area 17). Exp Brain Res 140:245-50 [Journal] .

NeuronCompartmentPropertyConnectivityNotes
Neocortex V1 interneuron basket PV cellAxon terminalGabato other GABAergic interneuronsLayer-4 basket cell axons make lateral connection isotropically near cell body ( 50 microm radius), but beyond this core region, anisotropically, preferably within a particular angular sectors cell body (Budd JM and Kisvárday ZF, 2001441 ). GABA inactivation of large-basket cells of visual cortex resulted in weakened orientation and direction selectivity, via weakening of long-range lateral inhibition by the basket cells (Kisvárday ZF et al, 2000442 ). GABAergic interneurons (basket cells, dendrite-targeting cells, and double-bouquet cells) form reciprocally interconnected intracortical networks in which basket cells play a prominent role, given the strength of innervation and the proximal placement of synapses by basket cells to their postsynaptic targets (Tamas G et al, 1998444 ). Layer 4 basket cells in cat visual cortex receive excitatory input from neighboring spiny neurons, resulting in large excitatory EPSPs. One third of spiny cell-smooth cell pair were connected reciprocally (postsynaptic targets include local spiny stellate, pyramidal cells, as well as smooth neurons), but the postsynaptic IPSPs evoked by basket cells are slower, GABAergic, probably of GABAA type (Tarczy-Hornoch K et al, 1998445 ).
Axon terminalGabato other GABAergic interneuronsLayer-4 basket cell axons make lateral connection isotropically near cell body ( 50 microm radius), but beyond this core region, anisotropically, preferably within a particular angular sectors cell body (Budd JM and Kisvárday ZF, 2001441 ). GABA inactivation of large-basket cells of visual cortex resulted in weakened orientation and direction selectivity, via weakening of long-range lateral inhibition by the basket cells (Kisvárday ZF et al, 2000442 ). GABAergic interneurons (basket cells, dendrite-targeting cells, and double-bouquet cells) form reciprocally interconnected intracortical networks in which basket cells play a prominent role, given the strength of innervation and the proximal placement of synapses by basket cells to their postsynaptic targets (Tamas G et al, 1998444 ). Layer 4 basket cells in cat visual cortex receive excitatory input from neighboring spiny neurons, resulting in large excitatory EPSPs. One third of spiny cell-smooth cell pair were connected reciprocally (postsynaptic targets include local spiny stellate, pyramidal cells, as well as smooth neurons), but the postsynaptic IPSPs evoked by basket cells are slower, GABAergic, probably of GABAA type (Tarczy-Hornoch K et al, 1998445 ).
Axon terminalGabato other GABAergic interneuronsLayer-4 basket cell axons make lateral connection isotropically near cell body ( 50 microm radius), but beyond this core region, anisotropically, preferably within a particular angular sectors cell body (Budd JM and Kisvárday ZF, 2001441 ). GABA inactivation of large-basket cells of visual cortex resulted in weakened orientation and direction selectivity, via weakening of long-range lateral inhibition by the basket cells (Kisvárday ZF et al, 2000442 ). GABAergic interneurons (basket cells, dendrite-targeting cells, and double-bouquet cells) form reciprocally interconnected intracortical networks in which basket cells play a prominent role, given the strength of innervation and the proximal placement of synapses by basket cells to their postsynaptic targets (Tamas G et al, 1998444 ). Layer 4 basket cells in cat visual cortex receive excitatory input from neighboring spiny neurons, resulting in large excitatory EPSPs. One third of spiny cell-smooth cell pair were connected reciprocally (postsynaptic targets include local spiny stellate, pyramidal cells, as well as smooth neurons), but the postsynaptic IPSPs evoked by basket cells are slower, GABAergic, probably of GABAA type (Tarczy-Hornoch K et al, 1998445 ).
Axon terminalGabato other GABAergic interneuronsLayer-4 basket cell axons make lateral connection isotropically near cell body ( 50 microm radius), but beyond this core region, anisotropically, preferably within a particular angular sectors cell body (Budd JM and Kisvárday ZF, 2001441 ). GABA inactivation of large-basket cells of visual cortex resulted in weakened orientation and direction selectivity, via weakening of long-range lateral inhibition by the basket cells (Kisvárday ZF et al, 2000442 ). GABAergic interneurons (basket cells, dendrite-targeting cells, and double-bouquet cells) form reciprocally interconnected intracortical networks in which basket cells play a prominent role, given the strength of innervation and the proximal placement of synapses by basket cells to their postsynaptic targets (Tamas G et al, 1998444 ). Layer 4 basket cells in cat visual cortex receive excitatory input from neighboring spiny neurons, resulting in large excitatory EPSPs. One third of spiny cell-smooth cell pair were connected reciprocally (postsynaptic targets include local spiny stellate, pyramidal cells, as well as smooth neurons), but the postsynaptic IPSPs evoked by basket cells are slower, GABAergic, probably of GABAA type (Tarczy-Hornoch K et al, 1998445 ).
Axon terminalGabato other GABAergic interneuronsLayer-4 basket cell axons make lateral connection isotropically near cell body ( 50 microm radius), but beyond this core region, anisotropically, preferably within a particular angular sectors cell body (Budd JM and Kisvárday ZF, 2001441 ). GABA inactivation of large-basket cells of visual cortex resulted in weakened orientation and direction selectivity, via weakening of long-range lateral inhibition by the basket cells (Kisvárday ZF et al, 2000442 ). GABAergic interneurons (basket cells, dendrite-targeting cells, and double-bouquet cells) form reciprocally interconnected intracortical networks in which basket cells play a prominent role, given the strength of innervation and the proximal placement of synapses by basket cells to their postsynaptic targets (Tamas G et al, 1998444 ). Layer 4 basket cells in cat visual cortex receive excitatory input from neighboring spiny neurons, resulting in large excitatory EPSPs. One third of spiny cell-smooth cell pair were connected reciprocally (postsynaptic targets include local spiny stellate, pyramidal cells, as well as smooth neurons), but the postsynaptic IPSPs evoked by basket cells are slower, GABAergic, probably of GABAA type (Tarczy-Hornoch K et al, 1998445 ).
Axon terminalGabato other GABAergic interneuronsLayer-4 basket cell axons make lateral connection isotropically near cell body ( 50 microm radius), but beyond this core region, anisotropically, preferably within a particular angular sectors cell body (Budd JM and Kisvárday ZF, 2001441 ). GABA inactivation of large-basket cells of visual cortex resulted in weakened orientation and direction selectivity, via weakening of long-range lateral inhibition by the basket cells (Kisvárday ZF et al, 2000442 ). GABAergic interneurons (basket cells, dendrite-targeting cells, and double-bouquet cells) form reciprocally interconnected intracortical networks in which basket cells play a prominent role, given the strength of innervation and the proximal placement of synapses by basket cells to their postsynaptic targets (Tamas G et al, 1998444 ). Layer 4 basket cells in cat visual cortex receive excitatory input from neighboring spiny neurons, resulting in large excitatory EPSPs. One third of spiny cell-smooth cell pair were connected reciprocally (postsynaptic targets include local spiny stellate, pyramidal cells, as well as smooth neurons), but the postsynaptic IPSPs evoked by basket cells are slower, GABAergic, probably of GABAA type (Tarczy-Hornoch K et al, 1998445 ).
Axon terminalGabato other GABAergic interneuronsLayer-4 basket cell axons make lateral connection isotropically near cell body ( 50 microm radius), but beyond this core region, anisotropically, preferably within a particular angular sectors cell body (Budd JM and Kisvárday ZF, 2001441 ). GABA inactivation of large-basket cells of visual cortex resulted in weakened orientation and direction selectivity, via weakening of long-range lateral inhibition by the basket cells (Kisvárday ZF et al, 2000442 ). GABAergic interneurons (basket cells, dendrite-targeting cells, and double-bouquet cells) form reciprocally interconnected intracortical networks in which basket cells play a prominent role, given the strength of innervation and the proximal placement of synapses by basket cells to their postsynaptic targets (Tamas G et al, 1998444 ). Layer 4 basket cells in cat visual cortex receive excitatory input from neighboring spiny neurons, resulting in large excitatory EPSPs. One third of spiny cell-smooth cell pair were connected reciprocally (postsynaptic targets include local spiny stellate, pyramidal cells, as well as smooth neurons), but the postsynaptic IPSPs evoked by basket cells are slower, GABAergic, probably of GABAA type (Tarczy-Hornoch K et al, 1998445 ).
Axon terminalGabato other GABAergic interneuronsLayer-4 basket cell axons make lateral connection isotropically near cell body ( 50 microm radius), but beyond this core region, anisotropically, preferably within a particular angular sectors cell body (Budd JM and Kisvárday ZF, 2001441 ). GABA inactivation of large-basket cells of visual cortex resulted in weakened orientation and direction selectivity, via weakening of long-range lateral inhibition by the basket cells (Kisvárday ZF et al, 2000442 ). GABAergic interneurons (basket cells, dendrite-targeting cells, and double-bouquet cells) form reciprocally interconnected intracortical networks in which basket cells play a prominent role, given the strength of innervation and the proximal placement of synapses by basket cells to their postsynaptic targets (Tamas G et al, 1998444 ). Layer 4 basket cells in cat visual cortex receive excitatory input from neighboring spiny neurons, resulting in large excitatory EPSPs. One third of spiny cell-smooth cell pair were connected reciprocally (postsynaptic targets include local spiny stellate, pyramidal cells, as well as smooth neurons), but the postsynaptic IPSPs evoked by basket cells are slower, GABAergic, probably of GABAA type (Tarczy-Hornoch K et al, 1998445 ).
Axon terminalGabato other GABAergic interneuronsLayer-4 basket cell axons make lateral connection isotropically near cell body ( 50 microm radius), but beyond this core region, anisotropically, preferably within a particular angular sectors cell body (Budd JM and Kisvárday ZF, 2001441 ). GABA inactivation of large-basket cells of visual cortex resulted in weakened orientation and direction selectivity, via weakening of long-range lateral inhibition by the basket cells (Kisvárday ZF et al, 2000442 ). GABAergic interneurons (basket cells, dendrite-targeting cells, and double-bouquet cells) form reciprocally interconnected intracortical networks in which basket cells play a prominent role, given the strength of innervation and the proximal placement of synapses by basket cells to their postsynaptic targets (Tamas G et al, 1998444 ). Layer 4 basket cells in cat visual cortex receive excitatory input from neighboring spiny neurons, resulting in large excitatory EPSPs. One third of spiny cell-smooth cell pair were connected reciprocally (postsynaptic targets include local spiny stellate, pyramidal cells, as well as smooth neurons), but the postsynaptic IPSPs evoked by basket cells are slower, GABAergic, probably of GABAA type (Tarczy-Hornoch K et al, 1998445 ).
Neocortex M1 interneuron basket PV cellAxon terminalGabato other GABAergic interneuronsLayer-4 basket cell axons make lateral connection isotropically near cell body ( 50 microm radius), but beyond this core region, anisotropically, preferably within a particular angular sectors cell body (Budd JM and Kisvárday ZF, 2001441 ). GABA inactivation of large-basket cells of visual cortex resulted in weakened orientation and direction selectivity, via weakening of long-range lateral inhibition by the basket cells (Kisvárday ZF et al, 2000442 ). GABAergic interneurons (basket cells, dendrite-targeting cells, and double-bouquet cells) form reciprocally interconnected intracortical networks in which basket cells play a prominent role, given the strength of innervation and the proximal placement of synapses by basket cells to their postsynaptic targets (Tamas G et al, 1998444 ). Layer 4 basket cells in cat visual cortex receive excitatory input from neighboring spiny neurons, resulting in large excitatory EPSPs. One third of spiny cell-smooth cell pair were connected reciprocally (postsynaptic targets include local spiny stellate, pyramidal cells, as well as smooth neurons), but the postsynaptic IPSPs evoked by basket cells are slower, GABAergic, probably of GABAA type (Tarczy-Hornoch K et al, 1998445 ).
Neocortex U1 interneuron basket PV cellAxon terminalGabato other GABAergic interneuronsLayer-4 basket cell axons make lateral connection isotropically near cell body ( 50 microm radius), but beyond this core region, anisotropically, preferably within a particular angular sectors cell body (Budd JM and Kisvárday ZF, 2001441 ). GABA inactivation of large-basket cells of visual cortex resulted in weakened orientation and direction selectivity, via weakening of long-range lateral inhibition by the basket cells (Kisvárday ZF et al, 2000442 ). GABAergic interneurons (basket cells, dendrite-targeting cells, and double-bouquet cells) form reciprocally interconnected intracortical networks in which basket cells play a prominent role, given the strength of innervation and the proximal placement of synapses by basket cells to their postsynaptic targets (Tamas G et al, 1998444 ). Layer 4 basket cells in cat visual cortex receive excitatory input from neighboring spiny neurons, resulting in large excitatory EPSPs. One third of spiny cell-smooth cell pair were connected reciprocally (postsynaptic targets include local spiny stellate, pyramidal cells, as well as smooth neurons), but the postsynaptic IPSPs evoked by basket cells are slower, GABAergic, probably of GABAA type (Tarczy-Hornoch K et al, 1998445 ).

References
441. Budd JM and Kisvárday ZF. (2001) Local lateral connectivity of inhibitory clutch cells in layer 4 of cat visual cortex (area 17). Exp Brain Res 140:245-50 [Journal] .
442. Kisvárday ZF, Crook JM, Buzás P and Eysel UT. (2000) Combined physiological-anatomical approaches to study lateral inhibition. J Neurosci Methods 103:91-106.
444. Tamas G, Somogyi P and Buhl EH. (1998) Differentially interconnected networks of GABAergic interneurons in the visual cortex of the cat. J Neurosci 18:4255-70.
445. Tarczy-Hornoch K, Martin KA, Jack JJ and Stratford KJ. (1998) Synaptic interactions between smooth and spiny neurones in layer 4 of cat visual cortex in vitro. J Physiol 508 ( Pt 2):351-63.
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