ライフサイエンスコーパス: optic flow

1 in the sylvian fissure, is not responsive to optic flow.

2 ffects of head rotation on the processing of optic flow.

3 lift to maintain a set-point in the ventral optic flow.

4 motion platform or simulated visually using optic flow.

5 unding effects of rotatory head movements on optic flow.

6 ut steer better with object motion than with optic flow.

7 e the variety of motion directions in radial optic flow.

8 they travel, whereas flying insects monitor optic flow.

9 ance because the close tunnel walls increase optic flow.

10 ons in the VPM are particularly sensitive to optic flow.

11 hin STPa are contributing to the analysis of optic flow.

12 irect role in the perception of heading from optic flow.

13 experience potentially confusing patterns of optic flow.

14 16], is that locomotive heading is guided by optic flow.

15 es a pattern of motion on the retina, called optic flow.

16 e neurons are well suited to the analysis of optic flow.

17 r monitoring self-motion through the induced optic flow.

18 several higher visual areas known to encode optic flow.

19 ponsive to inertial motion in the absence of optic flow.

20 tation and inhibition resulting from complex optic flow.

21 e visual motion and spatial location cues in optic flow.

22 neurons are selective for heading defined by optic flow.

23 is pooled in neurons sensitive to wide-field optic flow.

24 ir all responded best to the same pattern of optic flow.

25 f the effects was substantially stronger for optic flow.

26 ion creates only front-to-back (progressive) optic flow.

27 spatial and temporal characteristics of the optic flow [1-5].

28 bees perform optomotor course correction to optic flow, a response that is dependent on the spatial

29 otion, the predominant anterior to posterior optic flow activates retinal ganglion cells in a stereot

30 vestibular (inertial) self-motion signals to optic flow almost completely eliminates the errors in pe

31 as typically weaker than that obtained using optic flow alone, and heading preferences under congruen

32 STd neurons to heading directions defined by optic flow alone, inertial motion alone, and congruent c

33 Here we determine whether optic flow also drives visuo-locomotor adaptation in vis

34 onstraints on visual perception might impair optic flow analysis and contribute to spatial disorienta

35 When both optic flow and congruent object were presented together,

36 se neurons reach out to assemble patterns of optic flow and encode them reliably.

37 ual cues derived from the radial patterns of optic flow and from the relative motion of objects withi

38 tuning of macaque V6 neurons in response to optic flow and inertial motion stimuli.

39 nslation (i.e., heading) in response to both optic flow and inertial motion.

40 Optic flow and object motion processing impairments migh

41 We used optic flow and object motion stimuli to simulate aspects

42 isease patients show poorer performance with optic flow and object motion than all other groups and d

43 ssing deficits that limit the ability to use optic flow and object motion to perceive and control sel

44 estimation based-on self-movement cues from optic flow and object motion.

45 s is achieved by using information in global optic flow and other sensory arrays to estimate and dedu

46 , animals integrate visual speed gauged from optic flow and run speed gauged from proprioceptive and

47 recipient nuclei involved in the analysis of optic flow and the generation of the optokinetic respons

48 Image sequences were analysed using Sparse Optic Flow and the resultant frame-to-frame motion param

49 Here, we explore optic flow and vestibular convergence in the visual post

50 e brain are multisensory, responding to both optic flow and vestibular cues to self-motion.

51 cause neurons in this area are tuned to both optic flow and vestibular signals.

52 We found robust optic flow and vestibular tuning in more than one-third

53 eading discrimination task involving visual (optic flow) and vestibular (translational motion) cues.

54 Convergence of visual motion information (optic flow) and vestibular signals is important for self

55 emerges from encoding intricate patterns of optic flow, and the translation of these visual signals

56 Optic flow appears to dominate steering control in richl

57 Such patterns of optic flow are a potential source of information about t

58 tion patterns that emerge in spatio-temporal optic flow are essential for guiding self-motion along c

59 of a lone target, but increasingly relied on optic flow as it was added to the display.

60 otion including planar, circular, and radial optic flow, as assessed using adaptation paradigms.

61 ey respond selectively to global patterns of optic flow, as well as translational motion in darkness.

62 n primary visual cortex which respond to the optic flow associated with forward motion, while other c

63 at polarized-light-based compass neurons and optic-flow-based speed-encoding neurons converge in the

64 -a celestial-cue-based visual compass and an optic-flow-based visual odometer-but the underlying neur

65 n increases, however, this simple pattern of optic flow becomes increasingly complex.

66 ate altitude by maintaining a fixed value of optic flow beneath them, as suggested by a recent model

67 ly biased monkeys' heading percepts based on optic flow, but did not significantly impact vestibular

68 Here we show that radial optic flow can elicit appropriately directed (horizontal

69 This suggests that optic flow can influence the firing of boundary vector c

70 However, corresponding front-to-back optic flow causes antennae to move backward, as a linear

71 sing a custom-built 1.7-cm path length fiber-optic flow cell.

72 Modern optics flow cells based on total internal reflection are

73 t in the sparse environment, indicating that optic flow contributes over and above target drift alone

74 detect a moving object within the pattern of optic flow created by its own motion through the station

75 body rotations alone or in conjunction with optic flow, creating either purely vestibular or visuo-v

76 nkeys use both vestibular and visual motion (optic flow) cues to discriminate their direction of self

77 ndicate that the monkey's performance in the optic flow detection task depended on the location of th

78 The discovery of translational optic flow detectors in the central complex of a bee has

79 rons responded maximally to single-component optic flow displays but was also significantly activated

80 th translation, rotation, radial, and spiral optic flow displays designed to mimic the types of motio

81 in the absence of form cues using random dot optic flow displays.

82 tter leads us to suggest a new algorithm for optic flow driven odometry.

83 her adding vestibular self-motion signals to optic flow enhances the accuracy of heading judgments in

84 Radial optic flow evoked N200 responses comparable with those o

85 at move independently in the world alter the optic flow field and can induce errors in perceiving the

86 moving independently in the world alters the optic flow field and may bias heading perception if the

87 )motion is accompanied by object motion, the optic flow field includes a component due to self-motion

88 ppress responses to transient changes to the optic flow field.

89 sion is estimated from the divergence of the optic-flow field (the two-dimensional field of local tra

90 e neurons responds selectively to a specific optic flow-field representing the spatial distribution o

91 The extraction of optic flow fields by visual systems is crucial for cours

92 The speed of visual motion in optic flow fields can provide important cues about self-

93 ated self-movement from left or right offset optic flow fields of several sizes (25 degrees, 40 degre

94 lly so as to align with specific translatory optic flow fields, creating a neural ensemble tuned for

95 ssible function in enhancing selectivity for optic flow fields.

96 have an important role in the extraction of optic flow for the monitoring and guidance of self-motio

97 ersive virtual environment by displacing the optic flow from the direction of walking, violating the

98 that heading tuning of VIP neurons based on optic flow generally shifted with eye position, indicati

99 ys, and do not represent the complexities of optic flow generated during actual flight.

100 tant the rate of front-to-back image motion (optic flow) generated by the surface as they reduce alti

101 er deflections is highest in the presence of optic flow going in the opposite direction.

102 ies implement filtering driven by background optic flow, I tested their frequency-dependent steering

103 ht hovering in hummingbirds to determine how optic flow--image movement across the retina--is used to

104 ing (the direction of self-translation) from optic flow in a manner that is tolerant to rotational vi

105 RPD patients and HC perceived optic flow in the left hemifield as faster than in the r

106 ment of visual features on the ground plane (optic flow) in the ventral visual field, this resulted i

107 hypothesis that visual heading signals (from optic flow) in VIP might also be transformed into a body

108 rons to read the patterns of visual motion - optic flow - induced by the their movements.

109 sensory convergence involved in transforming optic flow information into a (head-centered) reference

110 Global processing of optic flow information is shown to play a fundamental ro

111 rea (MST) is well suited for the analysis of optic flow information.

112 Rotational optic flow is monitored using temporal frequency analyse

113 Human heading perception based on optic flow is not only accurate, it is also remarkably r

114 striking property of heading perception from optic flow is that discrimination is most precise when s

115 nd while their visual processing of rotatory optic flow is understood in exquisite detail, how they p

116 e interpretation of studies that assume that optic flow is, and should be, represented as an instanta

117 Sensitivity to speed gradients in optic flow might contribute to neuronal mechanisms for s

118 mer's disease patients showed smaller radial optic flow N200s than older adult subjects, and these we

119 ctive odorant increases the influence of yaw-optic flow on steering behavior in flight, which enhance

120 icant directional selectivity in response to optic flow, one-half show tuning to vestibular stimuli,

121 minent retinorecipient structures related to optic flow operations and visuomotor control.

122 e backward, as a linear function of relative optic flow, opposite the airspeed response.

123 show similar pointing accuracy using either optic flow or object motion, but steer better with objec

124 when heading judgments were based on either optic flow or vestibular cues, although the magnitude of

125 either computations of self-motion based on optic flow, or computations of absolute position based o

126 quence of retinal activity driven by natural optic flow organizes retinotopy by regulating axon arbor

127 Areas in posterior IPS preferred radial optic flow over planar motion, whereas areas in anterior

128 e VS cells are unreliable indicators of such optic flow parameters in the context of their noisy, tex

129 n egomotion-incompatible (EI) 3 x 3 array of optic flow patches; or c) moved randomly (RM).

130 nts increases gradually over time, while the optic-flow pattern is random.

131 ies and globally discounts (i.e., subtracts) optic flow patterns across the visual scene-a process ca

132 ecting moving objects because self-generated optic flow patterns confound image motion.

133 nal, and VIP neurons respond well to complex optic flow patterns similar to those found during self-m

134 more accurate heading judgements when using optic flow patterns than when using simulated movement p

135 n identified in humans by passive viewing of optic flow patterns that simulate egomotion and object m

136 omotor behaviors and coordinate the specific optic flow patterns that they induce.

137 tion of egocentric coordinates and of radial optic flow patterns, both of which are mediated by the p

138 ctional, and typically selective for complex optic flow patterns.

139 oup showed a selective impairment in outward optic flow perception [F(2,64) = 6.3, P = 0.003] relativ

140 Combining N200 amplitudes with optic flow perceptual thresholds and contrast sensitivit

141 Although optic flow plays an essential role in speed determinatio

142 In our study, we recorded optic flow preferences from PCs in IXcd, marked recordin

143 Here we demonstrate that optic flow processing has an important role in the detec

144 we propose that this could be combined with optic flow processing to enable three-dimensional naviga

145 r processing, but distal to MSTd in terms of optic flow processing.

146 STd in self-motion perception extends beyond optic flow processing.

147 t hierarchically similar to MSTd in terms of optic flow processing.

148 ported the idea that motor-related inputs to optic flow-processing cells represent internal predictio

149 quisite detail, how they process translatory optic flow remains a mystery.

150 antly faster than in MSTd, whereas timing of optic flow responses did not differ significantly among

151 Overall, optic flow responses in VPS were weaker than those in MS

152 equire a sophisticated system to exploit the optic flow resulting from moving images of the environme

153 ch, with their complex receptive fields, the optic flow resulting from rotation around different body

154 bellar PCs respond to particular patterns of optic flow resulting from self-motion in three-dimension

155 in the ventral uvula respond to patterns of optic flow resulting from self-motion through the enviro

156 The vast majority of research on optic flow (retinal motion arising because of observer m

157 one global pattern of retinal image motion (optic flow), rotation another.

158 itial heading direction are dominated by the optic flow's global radial pattern cue.

159 l frequency analysers, whereas translational optic flow seems to be monitored in terms of angular spe

160 Optic flow selectivity in VIP was weaker than in MSTd bu

161 ts overlap with the inputs of well described optic flow-sensitive lobula plate tangential cells (LPTC

162 e cortical area that combines vestibular and optic flow signals is the ventral intraparietal area (VI

163 cells and hippocampal place cells, yaw plane optic flow signals likely influence representations in t

164 nts derived from ambulation, vestibular, and optic-flow signals.

165 izing that visual motion evoked responses to optic flow simulating observer self-movement would be li

166 we removed the normal gradient of speeds in optic flow (slower speeds in the center, faster speeds i

167 gocentric midline and not with perception of optic flow speed asymmetries, and in RPD it was also ass

168 Thus, optic flow stimulation entrained PDs, albeit at drift sp

169 PIVC neurons did not respond to optic flow stimulation, and vestibular responses were si

170 ons to three-dimensional (3D) vestibular and optic flow stimulation.

171 d head positions while rhesus monkeys viewed optic flow stimuli depicting various headings.

172 Presentation of optic flow stimuli modulates the amplitude of concurrent

173 timuli preceded horizontal motion and radial optic flow stimuli to separate motion N200s from pattern

174 ed by changes in the mean speed of motion in optic flow stimuli, with response profiles resembling si

175 that responded to either radial or circular optic flow stimuli.

176 caques during the presentation of continuous optic flow stimuli.

177 lf-movement [F(2,194) = 40.5, P < 0.001] and optic flow stimulus size had little effect on heading di

178 In this work, we use a naturalistic optic flow stimulus to explore the responses of neurons

179 en simultaneously presented speeds within an optic flow stimulus.

180 guide walking to a stationary goal: (1) the optic-flow strategy, in which one aligns the direction o

181 in pursuit gain arising from differences in optic flow strength in the stimulus reconcile much of th

182 conditions: none (eyes closed), natural, and optic flow supplied by a virtual-reality headset.

183 adult subjects show better performance with optic flow than object cues for pointing (P < 0.001), bu

184 field and occlude regions of the background optic flow that are most informative about heading perce

185 inal images by inducing a pattern of retinal optic flow that cannot be compensated globally by a sing

186 aining other moving objects, which introduce optic flow that is inconsistent with observer self-motio

187 The visual motion - or optic flow - that results from an observer's own movemen

188 ltiple objects (an artificial recreation of 'optic flow' that would usually occur during head rotatio

189 work presented here investigates the role of optic flow, the apparent change of patterns of light on

190 d obstacles in the environment is encoded by optic flow, the movement of images on the eye.

191 t was proposed that we steer to a goal using optic flow, the pattern of motion at the eye that specif

192 was assessed using perceptual thresholds for optic flow, the visual motion seen during observer self-

193 strides, rather than linear acceleration or optic flow: the number of steps they took depended on bo

194 e gain of the optomotor response to sideslip optic flow, they concomitantly increase the gain of the

195 ors are correlated with selectively elevated optic flow thresholds in Alzheimer's disease patients.

196 Optic flow thus plays a central role in both online cont

197 of specialized neurons that integrate local optic flow to estimate body rotation during locomotion.

198 environment to test how the human brain uses optic flow to monitor changing object coordinates.

199 ded new insights into the way Drosophila use optic flow to pick out a close target to approach.

200 pid responses to heading deviations and uses optic flow to redirect self-movement toward the intended

201 Insects depend upon optic flow to supply much of their information about the

202 ects can use this information, often termed "optic flow", to accurately estimate their direction of s

203 erated by traveling straight-the translatory optic flow-to successfully navigate obstacles: near obje

204 ots which either: a) followed a time-varying optic flow trajectory in a single, egomotion-compatible

205 e medial superior temporal area (MSTd) where optic flow tuning typically dominates or the visual post

206 stibular signals, in contrast to MSTd, where optic flow tuning typically dominates.

207 Subjects were presented with either visual (optic-flow), vestibular (motion-platform), or combined (

208 ationship between Purkinje cell responses to optic flow visual stimuli and ZII stripes.

209 heading tuning of MSTd neurons by presenting optic flow (visual condition), inertial motion (vestibul

210 rm (vestibular condition) or simulated using optic flow (visual condition).

211 The preferred rotation axis in response to optic flow was generally the opposite of that during phy

212 We found that tuning for optic flow was predominantly eye-centered, whereas tunin

213 fter labyrinthectomy, whereas selectivity to optic flow was unaffected.

214 r MST is involved in extracting heading from optic flow, we perturbed its activity in monkeys trained

215 ponds differentially to egomotion-compatible optic flow when compared to: (a) coherent but egomotion-

216 irection of self-motion (i.e., heading) from optic flow when moving through a stationary environment.

217 significant 3D heading tuning in response to optic flow, whereas 64% were selective for heading defin

218 time-history in the neural representation of optic flow, which may modulate its structure.

219 haviors involving fast-moving stimuli (e.g., optic flow), while area PM helps guide behaviors involvi

220 In separate trials, we combined optic flow with non-congruent object motion, simulating

221 tion of locomotion or "heading" specified by optic flow with the visual goal; and (2) the egocentric-

222 the direction of rotation in the absence of optic flow, with more neurons preferring roll than pitch