FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2280498916> ?p ?o ?g. }

• W2280498916 endingPage "985" @default.
• W2280498916 startingPage "967" @default.
• W2280498916 abstract "1. We describe a four-layered neural network (Fig. 1), based on the input organization of a collision signaling neuron in the visual system of the locust, the lobula giant movement detector (LGMD). The 250 photoreceptors (P units) in layer 1 are excited by any change in illumination, generated when an image edge passes over them. Layers 2 and 3 incorporate both excitatory and inhibitory interactions, and layer 4 consists of a single output element, equivalent to the locust LGMD. 2. The output element of the neural network, the LGMD, responds directionally when challenged with approaching versus receding objects, preferring approaching objects (Figs. 2-4). The time course and shape of the LGMD response matches that of the LGMD (Fig. 4). Directionality is maintained with objects of various sizes and approach velocities. The network is tuned to direct approach (Fig. 5). The LGMD shows no directional selectivity for translatory motion at a constant velocity across the eye, but its response increases with edge velocity (Figs. 6 and 9). 3. The critical image cues for a selective response to object approach by the LGMD are edges that change in extent or in velocity as they move (Fig. 7). Lateral inhibition is crucial to the selectivity of the LGMD and the selective response is abolished or else much reduced if lateral inhibition is taken out of the network (Fig. 7). We conclude that lateral inhibition in the neuronal network for the locust LGMD also underlies the experimentally observed critical image cues for its directional response. 4. Lateral inhibition shapes the velocity tuning of the network for objects moving in the X and Y directions without approaching the eye (see Fig. 1). As an edge moves over the eye at a constant velocity, a race occurs between the excitation that is caused by edge movement and which passes down the network and the inhibition that passes laterally. Excitation must win this race for units in layer 3 to reach threshold (Fig. 8). The faster the edge moves over the eye the more units in layer 3 reach threshold and pass excitation on to the LGMD (Fig. 9). 5. Lateral inhibition shapes the tuning of the network for objects moving in the Z direction, toward or away from the eye (see Fig. 1). As an object approaches the eye there is a buildup of excitation in the LGMD throughout the movement whereas the response to object recession is often brief, particularly for high velocities. During object motion, a critical race occurs between excitation passing down the network and inhibition directed laterally, excitation must win this race for the rapid buildup in excitation in the LGMD as seen in the final stages of object approach (Figs. 10-12). The buildup is eliminated if, during object approach, excitation cannot win this race (as happens when the spread of inhibition laterally takes < 1 ms Fig. 13, D and E). Taking all lateral inhibition away increases the LGMD response to object approach, but overall directional selectivity is reduced as there is also a lot of residual network excitation following object recession (Fig. 13B). 6. Directional selectivity for rapidly approaching objects is further enhanced at the level of the LGMD by the timing of a feed-forward, inhibitory loop onto the LGMD, activated when a large number of receptor units are excited in a short time. The inhibitory loop is activated at the end of object approach, truncating the excitatory LGMD response after approach has ceased, but at the initiation of object recession (*Fig. 2, 3, and 13). Eliminating the feed-forward, inhibitory loop prolongs the LGMD response to both receding and approaching objects (Fig. 13F)." @default.
• W2280498916 created "2016-06-24" @default.
• W2280498916 creator A5006579326 @default.
• W2280498916 creator A5010994517 @default.
• W2280498916 date "1996-03-01" @default.
• W2280498916 modified "2023-10-10" @default.
• W2280498916 title "Neural network based on the input organization of an identified neuron signaling impending collision" @default.
• W2280498916 cites W12491496 @default.
• W2280498916 cites W126460343 @default.
• W2280498916 cites W165058361 @default.
• W2280498916 cites W1955753231 @default.
• W2280498916 cites W1979629991 @default.
• W2280498916 cites W1984204085 @default.
• W2280498916 cites W1997584156 @default.
• W2280498916 cites W1999190965 @default.
• W2280498916 cites W2005354652 @default.
• W2280498916 cites W2007263747 @default.
• W2280498916 cites W2010053979 @default.
• W2280498916 cites W2012498821 @default.
• W2280498916 cites W2018048272 @default.
• W2280498916 cites W2021058416 @default.
• W2280498916 cites W2022591559 @default.
• W2280498916 cites W2029261061 @default.
• W2280498916 cites W2034222833 @default.
• W2280498916 cites W2047990541 @default.
• W2280498916 cites W2048986072 @default.
• W2280498916 cites W2050610961 @default.
• W2280498916 cites W2054369832 @default.
• W2280498916 cites W2059892667 @default.
• W2280498916 cites W2063561809 @default.
• W2280498916 cites W2069944956 @default.
• W2280498916 cites W2091103693 @default.
• W2280498916 cites W2119513601 @default.
• W2280498916 cites W2131441488 @default.
• W2280498916 cites W2133741176 @default.
• W2280498916 cites W2154507910 @default.
• W2280498916 cites W2155192332 @default.
• W2280498916 cites W2260623397 @default.
• W2280498916 cites W2395798553 @default.
• W2280498916 cites W2559242535 @default.
• W2280498916 doi "https://doi.org/10.1152/jn.1996.75.3.967" @default.
• W2280498916 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/8867110" @default.
• W2280498916 hasPublicationYear "1996" @default.
• W2280498916 type Work @default.
• W2280498916 sameAs 2280498916 @default.
• W2280498916 citedByCount "161" @default.
• W2280498916 countsByYear W22804989162012 @default.
• W2280498916 countsByYear W22804989162013 @default.
• W2280498916 countsByYear W22804989162014 @default.
• W2280498916 countsByYear W22804989162015 @default.
• W2280498916 countsByYear W22804989162016 @default.
• W2280498916 countsByYear W22804989162017 @default.
• W2280498916 countsByYear W22804989162018 @default.
• W2280498916 countsByYear W22804989162019 @default.
• W2280498916 countsByYear W22804989162020 @default.
• W2280498916 countsByYear W22804989162021 @default.
• W2280498916 countsByYear W22804989162022 @default.
• W2280498916 countsByYear W22804989162023 @default.
• W2280498916 crossrefType "journal-article" @default.
• W2280498916 hasAuthorship W2280498916A5006579326 @default.
• W2280498916 hasAuthorship W2280498916A5010994517 @default.
• W2280498916 hasConcept C112592302 @default.
• W2280498916 hasConcept C118403218 @default.
• W2280498916 hasConcept C121332964 @default.
• W2280498916 hasConcept C154945302 @default.
• W2280498916 hasConcept C169760540 @default.
• W2280498916 hasConcept C17077164 @default.
• W2280498916 hasConcept C186060115 @default.
• W2280498916 hasConcept C2776041477 @default.
• W2280498916 hasConcept C2778794669 @default.
• W2280498916 hasConcept C41008148 @default.
• W2280498916 hasConcept C50644808 @default.
• W2280498916 hasConcept C59822182 @default.
• W2280498916 hasConcept C72064307 @default.
• W2280498916 hasConcept C86803240 @default.
• W2280498916 hasConceptScore W2280498916C112592302 @default.
• W2280498916 hasConceptScore W2280498916C118403218 @default.
• W2280498916 hasConceptScore W2280498916C121332964 @default.
• W2280498916 hasConceptScore W2280498916C154945302 @default.
• W2280498916 hasConceptScore W2280498916C169760540 @default.
• W2280498916 hasConceptScore W2280498916C17077164 @default.
• W2280498916 hasConceptScore W2280498916C186060115 @default.
• W2280498916 hasConceptScore W2280498916C2776041477 @default.
• W2280498916 hasConceptScore W2280498916C2778794669 @default.
• W2280498916 hasConceptScore W2280498916C41008148 @default.
• W2280498916 hasConceptScore W2280498916C50644808 @default.
• W2280498916 hasConceptScore W2280498916C59822182 @default.
• W2280498916 hasConceptScore W2280498916C72064307 @default.
• W2280498916 hasConceptScore W2280498916C86803240 @default.
• W2280498916 hasIssue "3" @default.
• W2280498916 hasLocation W22804989161 @default.
• W2280498916 hasLocation W22804989162 @default.
• W2280498916 hasOpenAccess W2280498916 @default.
• W2280498916 hasPrimaryLocation W22804989161 @default.
• W2280498916 hasRelatedWork W2027241538 @default.
• W2280498916 hasRelatedWork W2038607331 @default.
• W2280498916 hasRelatedWork W2103655875 @default.
• W2280498916 hasRelatedWork W2130721285 @default.

• next