Objects flashed in alignment with moving objects appear to lag behind [Nijhawan, 1994 Nature (London) 370 256–257], Could this ‘flash-lag’ effect be due to attentional delays in bringing flashed items to perceptual awareness [Titchener, 1908/1973 Lectures on the Elementary Psychology of Feeling and Attention first published 1908 (New York: Macmillan); reprinted 1973 (New York: Arno Press)]? We overtly manipulated attentional allocation in three experiments to address the following questions: Is the flash-lag effect affected when attention is (a) focused on a single event in the presence of multiple events, (b) distributed over multiple events, and (c) diverted from the flashed object? To address the first two questions, five rings, moving along a circular path, were presented while observers attentively tracked one or multiple rings under four conditions: the ring in which the disk was flashed was (i) known or (ii) unknown (randomly selected from the set of five); location of the flashed disk was (i) known or (ii) unknown (randomly selected from ten locations), The third question was investigated by using two moving objects in a cost – benefit cueing paradigm, An arrow cued, with 70% or 80% validity, the position of the flashed object, Observers performed two tasks: (a) reacted as quickly as possible to flash onset; (b) reported the flash-lag effect, We obtained a significant and unaltered flash-lag effect under all the attentional conditions we employed, Furthermore, though reaction times were significantly shorter for validly cued flashes, the flash-lag effect remained uninfluenced by cue validity, indicating that quicker responses to validly cued locations may be due to the shortening of post-perceptual delays in motor responses rather than the perceptual facilitation, We conclude that the computations that give rise to the flash-lag effect are independent of attentional deployment.
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References
1.
BaldoM V CKleinS A, 1995“Extrapolation or attention shift?”Nature (London)378565–566
2.
BerryM JBrivanlouI HJordanT AMeisterM, 1999“Anticipation of moving stimuli by the retina”Nature (London)398334–338
CavanaghP, 1997“Predicting the present”Nature (London)38619–21
5.
DesimoneRChelazziLMillerE KDuncanJ, 1994“Neuronal mechanisms of visual attention”, in Early Vision and Beyond Eds PapathomasT VChubbCGoreaAKowlerE, (Cambridge, MA: MIT Press) pp 217–226
6.
De ValoisR LDe ValoisK K, 1991“Vernier acuity with stationary moving gabors”Vision Research311619–1626
7.
DowningP ETreismanA M, 1997“The line-motion illusion: Attention or impletion?”Journal of Experimental Psychology: Human Perception and Performance23768–779
8.
DuhamelJ RColbyC LGoldbergM E, 1992“The updating of the representation of visual space in parietal cortex by intended eye movements”Science25590–92
9.
DuncanJ, 1984“Selective attention and the organization of visual information”Journal of Experimental Psychology: General113501–517
10.
EaglemanD MSejnowskiT J, 2000“Motion integration and postdiction in visual awareness”Science2872036–2038
11.
GegenfurtnerK, 1999“The eyes have it!”Nature (London)398291–292
12.
HikosakaOMiyauchiSShimojoS, 1993a“Focal visual attention produces illusory temporal order and motion sensation”Vision Research331219–1240
13.
HikosakaOMiyauchiSShimojoS, 1993b“Voluntary and stimulus-induced attention detected as motion sensation”Perception22517–526
14.
HillstromA PYantisS, 1994“Visual motion and attentional capture”Perception & Psychophysics55399–411
15.
HubelD HWieselT N, 1968“Receptive fields and functional architecture of monkey striate cortex”Journal of Physiology (London)195215–243
16.
JamesW, 1980Principles of Psychology (New York: Dover)
17.
JonidesJYantisS, 1998“Uniqueness of abrupt visual onset in capturing attention”Perception & Psychophysics43346–354
18.
KahnemanDTreismanAGibbsB J, 1992“The reviewing of object files: Object-specific integration of information”Cognitive Psychology24175–219
19.
KanwisherNDriverJ, 1992“Objects, attributes, and visual attention: Which, what, and where”Current Directions in Psychological Science126–31
KhuranaBGiffordCNijhawanR, 1999“Flash-lag based contours are available to pre-attentive vision”Investigative Ophthalmology & Visual Science40(4) S1831
22.
KhuranaBKowlerE, 1987“Shared attentional control of smooth eye movements and perception”Vision Research271603–1618
23.
KhuranaBNijhawanR, 1995“Extrapolation or attention shift?”Nature (London)378565–566
24.
KinchlaR A, 1992“Attention”Annual Review of Psychology43711–742
25.
KowlerE, 1994“Attention”, in Early Vision and Beyond Eds PapathomasT VChubbCGoreaAKowlerE, (Cambridge, MA: MIT Press) pp 177–179
26.
KrekelbergBLappeM, 2000“A model of the perceived relative positions of moving objects based upon a slow averaging process”Vision Research40201–215
27.
LaBergeD, 1983“The spatial extent of attention to letters and words”Journal of Experimental Psychology: Human Perception and Performance11583–597
28.
LaBergeDBrownV, 1989“Theory of attentional operations in shape identification”Psychological Review96101–124
29.
LivingstoneM SHubelD H, 1987“Psychophysical evidence for separate channels for the perception of form, color, movement, and depth”Journal of Neuroscience73416–3468
30.
LuZ LDosherB A, 1998“External noise distinguishes attention mechanisms”Vision Research381183–1198
31.
McCormickP AKleinR, 1990“The spatial distribution of attention during covert visual orienting”Acta Psychologica75225–242
32.
MachE, 1897Contributions to the Analysis of the Sensations (Illinois: Open Court)
33.
MackayD M, 1958“Perceptual stability of a stroboscopically lit visual field containing self-luminous objects”Nature (London)181507–508
MateeffSHohnsbeinJ, 1988“Perceptual latencies are shorter for motion towards the fovea than for motion away”Vision Research28711–719
36.
MatinLPearceD G, 1965“Visual perception of direction for stimuli flashed during voluntary saccadic eye movements”Science1481485–1488
37.
NakayamaKMackebenM, 1989“Sustained and transient components of focal visual attention”Vision Research291631–1647
38.
NijhawanR, 1992“Misalignment of contours through the interaction of apparent and real motion systems”Investigative Ophthalmology & Visual Science33(4) S1415
39.
NijhawanR, 1994“Motion extrapolation in catching”Nature (London)370256–257
40.
NijhawanR, 1997“Visual decomposition of color through motion extrapolation”Nature (London)38666–69
41.
NijhawanR, (submitted) “The flash-lag phenomenon produces spurious edges”
42.
NijhawanRKhuranaB, (in press) “Conscious registration of continuous and discrete visual events”, in The Neural Correlates of Consciousness: Empirical and Conceptual Issues Ed, MetzingerT, (Cambridge, MA: MIT Press)
43.
NijhawanRKhuranaBKamitaniYWatanabeKShimojoS, 1998“Eye-movement based extrapolation leads to decomposition of color”Investigative Ophthalmology & Visual Science39(4) S1045
44.
NijhawanRThorntonI, 1996“‘Lag-correction’ and ‘delay’ versus motion ‘deblurring’ and ‘persistence’ onset lag and offset lag”Investigative Ophthalmology & Visual Science36(4) S3437
45.
NijhawanRWatanabeKKhuranaBShimojoS, (submitted) “Flash-lag phenomenon: Motion extrapolation or shorter latency”
46.
PhillipsC GZekiSBarlowH B, 1984“Localization of function in the cerebral cortex, Past, present and future”Brain107327–361
47.
PosnerM I, 1980“Orienting of attention”Quarterly Journal of Experimental Psychology323–25
48.
PosnerM ICohenY, 1984“Components of visual orienting”, in Attention and Performance X Eds BoumaHBowhuisD, (Hillsdale, NJ: Lawrence Erlbaum Associates) pp 531–556
49.
PosnerM IPetersenS E, 1990“The attention system of the human brain”Annual Review of Neuroscience1325–42
50.
PosnerM IRafalR DChoateL SVaughanJ, 1985“Inhibition of return: Neural basis and function”Cognitive Neuropsychology2211–228
51.
PurushothamanGPatelS SBedellH EOgmenH, 1998“Moving ahead through differential visual latency”Nature (London)396424
52.
PylyshynZ W, 1989“The role of location indexes in spatial perception: A sketch of the FINST spatial-indexing model”Cognition3265–97
53.
PylyshynZ W, 1994“Some primitive mechanisms of spatial attention”Cognition50363–384
54.
PylyshynZ WBurkellJFisherBSearsCSchmidtCTrickL, 1994“Multiple parallel access in visual attention”Canadian Journal of Experimental Psychology48260–283
55.
PylyshynZ WStormR W, 1988“Tracking of multiple independent targets: Evidence for a parallel tracking mechanism”Spatial Vision31–19
56.
SchmidtW CFisherB DPylyshynZ W, 1998“Multiple onset stimuli elicit illusory line-motion”Journal of Experimental Psychology: Human Perception and Performance24505–525
57.
ShawM L, 1984“Division of attention among spatial location: A fundamental difference between detection of letters and detection of luminance increments”, in Attention and Performance X Eds BoumaHBouwhuisD G, (Hillsdale, NJ: Lawrence Erlbaum Associates) pp 109–121
58.
ShimojoSTanakaYWatanabeK, 1995“Stimulus-driven facilitation and inhibition of visual information processing in environmental and retinotopic representation of space”Cognitive Brain Research511–21
59.
SperlingGDosherB, 1986“Strategy and optimization in human information processing”, in Handbook of Perception and Performance Eds BoffKKaufmanLThomasJ, (New York: John Wiley) pp 1–65
60.
StelmachL BHerdmanC M, 1991“Directed attention and perception of temporal order”Journal of Experimental Psychology: Human Perception and Performance17539–550
61.
StelmachL BHerdmanC MMcNeilK R, 1994“Attentional modulation of visual processes in motion perception”Journal of Experimental Psychology: Human Perception and Performance20108–121
62.
TitchenerE B, 1908/1973Lectures on the Elementary Psychology of Feeling and Attention [first published 1908 (New York: Macmillan); reprinted 1973 (New York: Arno Press)]
63.
TreismanA, 1993“The perception of features and objects”, in Attention: Selection, Awareness and Control Eds BaddeleyAWeiskrantzL, (Clarendon Press: Oxford) pp 5–34
64.
TsalY, 1983“Movement of attention across the visual field”Journal of Experimental Psychology: Human Perception and Performance9523–530
65.
WardleD A, 1998“The time delay in human vision”The Physics Teacher36442–444
66.
WatanabeKNijhawanRKhuranaBShimojoS, 1999“Global configuration of moving stimuli modulates the flash-lag effect”Investigative Ophthalmology & Visual Science40(4) S358
67.
WatanabeKNijhawanRKhuranaBShimojoS, (submitted) “Perceived shape of moving stimuli modulates the relative position of a visual flash”
68.
WatanabeKShimojoS, 1998“Attentional modulation in perception of visual motion events”Perception271041–1054
69.
WeichselgartnerESperlingG, 1987“Dynamics of automatic and controlled visual attention”Science238778–780
70.
WhitneyDMurakamiI, 1998“Latency difference, not spatial extrapolation”Nature Neuroscience1656–657
71.
WhitneyDMurakamiICavanaghP, 2000“Illusory spatial offset of a flash relative to a moving stimulus is caused by differential latencies for moving and flashed stimuli”Vision Research40137–149
72.
YantisSHillstromA P, 1994“Stimulus-driven attentional capture: Evidence from equiluminant visual objects”Journal of Experimental Psychology: Human Perception and Performance2095–107
73.
YantisSJonidesJ, 1984“Abrupt visual onsets and selective attention: Evidence from visual search”Journal of Experimental Psychology: Human Perception and Performance10601–621
74.
YantisSJonidesJ, 1990“Abrupt visual onsets and selective attention: Voluntary versus automatic allocation”Journal of Experiment Psychology: Human Perception and Performance16121–134
