Antitopographic Inhibition Mediates 1 Competitive Stimulus Selection in an Attention Network
نویسندگان
چکیده
RECURRENT ANTITOPOGRAPHIC INHIBITION MEDIATES 1 COMPETITIVE STIMULUS SELECTION IN AN ATTENTION NETWORK 2 3 Dihui Lai1, Sebastian Brandt1, Harald Luksch2, Ralf Wessel1 4 Dept. of Physics, Washington University, St. Louis, MO 63130; 5 Lehrstuhl für Zoologie, Technische Universität München, 85350 Freising, 6 Germany 7 8 Running head: Antitopographic inhibition mediates competition 9 10 Corresponding author: 11 Dihui Lai, Dept of Physics, Washington University, St. Louis, MO 63130, 12 Tel.: 314-935-9081, Fax: 314-935-6219, [email protected] 13 14 15 Articles in PresS. J Neurophysiol (December 15, 2010). doi:10.1152/jn.00673.2010
منابع مشابه
Recurrent antitopographic inhibition mediates competitive stimulus selection in an attention network.
Topographically organized neurons represent multiple stimuli within complex visual scenes and compete for subsequent processing in higher visual centers. The underlying neural mechanisms of this process have long been elusive. We investigate an experimentally constrained model of a midbrain structure: the optic tectum and the reciprocally connected nucleus isthmi. We show that a recurrent antit...
متن کاملSpatially Reciprocal Inhibition of Inhibition within a Stimulus Selection Network in the Avian Midbrain
Reciprocal inhibition between inhibitory projection neurons has been proposed as the most efficient circuit motif to achieve the flexible selection of one stimulus among competing alternatives. However, whether such a motif exists in networks that mediate selection is unclear. Here, we study the connectivity within the nucleus isthmi pars magnocellularis (Imc), a GABAergic nucleus that mediates...
متن کاملRules of competitive stimulus selection in a cholinergic isthmic nucleus of the owl midbrain.
In a natural scene, multiple stimuli compete for the control of gaze direction and attention. The nucleus isthmi pars parvocellularis (Ipc) is a cholinergic, midbrain nucleus that is reciprocally interconnected to the optic tectum, a structure known to be involved in the control of gaze and attention. Previous research has shown that the responses of many Ipc units to a visual stimulus presente...
متن کاملThe role of a midbrain network in competitive stimulus selection.
A midbrain network interacts with the well-known frontoparietal forebrain network to select stimuli for gaze and spatial attention. The midbrain network, containing the superior colliculus (SC; optic tectum, OT, in non-mammalian vertebrates) and the isthmic nuclei, helps evaluate the relative priorities of competing stimuli and encodes them in a topographic map of space. Behavioral experiments ...
متن کاملModeling a Multi-period Transportation System for Supplier Selection and Orders Allocation Problem (case study: Parchsaz company)
The combination of transportation costs is very important in supplier decisions. In these days economic and productive firms in order to gain a competitive advantage or competitive advantage with the aim of gaining more market share in terms of controlling the cost of raw materials that directly and indirectly constitutes a major part of the cost of the product They are on their agenda. Hence, ...
متن کامل