Research reportArchitecture of a gain controller in the pursuit system
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Cited by (21)
The neuronal basis of on-line visual control in smooth pursuit eye movements
2015, Vision ResearchCitation Excerpt :Previous studies provided abundant evidence that initial pursuit gain, which is based on open-loop control, is highly influenced by the visual properties of target motion (Krauzlis & Lisberger, 1994; Lisberger & Westbrook, 1985; Lisberger et al., 1981; Tychsen & Lisberger, 1986). The visuomotor gain associated with the initial pursuit is variable, which depends on ongoing behavioral states or cognitive factors (Barnes, 2008; Keating & Pierre, 1996; Krauzlis & Miles, 1996; Tabata, Miura, & Kawano, 2005; Tabata et al., 2006). For example, the initial pursuit response evoked by visual target motion is enhanced when the subjects anticipated the tracking of a moving target.
Neural activity in the frontal pursuit area does not underlie pursuit target selection
2011, Vision ResearchCitation Excerpt :These findings are not conclusive, but they are sufficient to keep open the question of whether the buildup activity in FPA neurons facilitates pursuit generally or only in their preferred directions. One final related point is that our results could account for the behavioral observation that subjects exhibit an increase in pursuit gain during fixation when they expect that they will be pursuing soon (Keating & Pierre, 1996; Kodaka & Kawano, 2003; Tabata et al., 2005, 2006, 2008). In these experiments, the expectation of upcoming pursuit increases the gain of the pursuit system, similar to the increase in gain that is observed during pursuit itself (Schwartz & Lisberger, 1994).
MSTd neurons during ocular following and smooth pursuit perturbation
2008, Progress in Brain ResearchCitation Excerpt :It is small during fixation and increases monotonically with higher constant pursuit velocities. This reflects a nonlinear mechanism and has been called dynamic gain control (Schwartz and Lisberger, 1994; Keating and Pierre, 1996). Several structures at the cortical, brainstem, and cerebellar levels are involved in the generation of these eye movements.
Neural activity in cortical areas MST and FEF in relation to smooth pursuit gain control
2008, Progress in Brain ResearchCitation Excerpt :The FEF–NRTP–DV pathway implements the DGC mechanism. As shown in several studies (e.g., Keating and Pierre, 1996; Churchland and Lisberger, 2002), the feedforward gain depends linearly on tracking velocity, therefore retinal slip is multiplied by a rectified linear function of the internal estimate of eye velocity (rectification is justified by the fact that the gain is independent of the direction of target motion). Figure 1(b) shows typical responses associated with DGC which are reproduced correctly by the proposed model.
Confidence in predicted position error explains saccadic decisions during pursuit
2021, Journal of Neurophysiology