3. CB during flicker (Rensink, O’Regan & Clark, 1997; 2000)

9. CB during Blinks (O’Regan, Deubel & Clark & Rensink, 2000)

18. Flicker –Rensink, O’Regan & Clark,1997; 1999 Eye saccades –Currie, McConkie, Carlson-Radvansky & Irwin, 1995; McConkie & Currie, 1996 Blinks –O’Regan, Deubel, Clark, Rensink, 1999 Film cuts, real life –Levin & Simons, 1997 “Mudsplashes” –O’Regan, Rensink & Clark (Nature, 1999) Change Blindness

19. CB during Mudsplashes (O’Regan, Rensink & Clark, 1999)

33. detailed internal representation

34. sparse ???

36. Why do we think we see “everything”? Immediate availability at flick of eye/attention The “world as an outside memory”(O’Regan, 1992) refrigerator light analogy (N. Thomas) visual “solipsism” vividness through transients

37. Why we think we see everything Refrigerator light analogy (N. Thomas) –seeing is having access

41. Yarbus, 1978

42. Why do we think we see “everything”? Immediate availability at flick of eye/attention The “world as an outside memory”(O’Regan, 1992) refrigerator light analogy (N. Thomas) visual “solipsism” vividness through transients

43. de “voir” l’illusion de Visual solipsism

45. Simons & Chabris, 2000

46. Haines, 1991. Ames Res. Center, NASA

47. Probability of Change Detection O’Regan, Deubel, Clark & Rensink, 2000 Central Marginal

48. “Post-attentive vision” J. M. Wolfe, N. Klempen, and K. Dahlen (in press) Repeated Search

49. 80 ms mask 30 ms mask 30 ms Visual search has no memory T. Horowitz & J.M. Wolfe (Nature, 1998)

50. “Inattentional Blindness” A. Mack & I. Rock (1998) Normal trials Critical trial time 1.5 s 200 ms

51. Why do we think we see “everything”? Immediate availability at flick of eye/attention The “world as an outside memory”(O’Regan, 1992) refrigerator light analogy (N. Thomas) visual “solipsism” vividness through transients

52. Visual Transients Attract attention to change location Impression of continuous presence

55. motion orientation color xxxx yyyy MODULES INFORMATION AVAILABLE: Ron Bag Hotel Foot Table x y z w r Soda

56. select Ron Soda Foot INFORMATION AVAILABLE: INFORMATION ENCODED: Ron Bag Hotel Foot Table x y z w r Soda BAG CODED? Bag

57. motion orientation color xxxx yyyy TRANSIENTS IN MODULES.... INFORMATION AVAILABLE: BAG DISAPPEARS! Ron Hotel Foot Table x y z w r Soda

58. Ron Soda Foot compare AFTER CHANGE INFORMATION AVAILABLE: (previously stored) Ron Hotel Foot Table x y z w r Soda Bag

59. Detecting changes normally transient indicates location and ‘flavour’ of change. if object previously coded: transient indicates change location comparison can be made if object not coded ‘flavor’ can be used to guess at change

60. Ron Soda Foot compare FLICKER INFORMATION AVAILABLE: (previously stored) Ron Hotel Foot Table x y z w r Soda Bag

67. Detecting changes when there are global transients if object coded: slow search for change location if object not coded: no hope.

68. Using a global transient Flicker –Rensink, O’Regan & Clark,1997; 1999 Eye saccades –Currie, McConkie, Carlson-Radvansky & Irwin, 1995; McConkie & Currie, 1996 Blinks –O’Regan, Deubel, Clark, Rensink, 1999 Film cuts –Levin & Simons, 1997

69. D. Simons & D. Levin

71. Using distracting local transients “Mudsplashes” –O’Regan, Rensink & Clark (Nature, 1999)

72. Ron Pepsi Foot compare MUDSPLASH INFORMATION AVAILABLE: (previously stored) Ron Hotel Foot Table x y z w r Soda Bag

73. Principle: render transients inoperative –Drowned by global transient: flicker, saccade, blink, film cut –Diversion by local transient (mudsplash) –No transient: slow change (R. Chabrier) Change blindness experiments

74. Chabrier & O’Regan, submitted

76. Recent sources on CB Vis Cog 2000, 1/2/3 (Ed. Dan Simons) Fleeting Memories (Ed. V. Colthert) MIT Press, 1999 http://www.wjh.harvard.edu/~viscog/change/

77. Recent issues on CB implicit memory, unconscious recall layout cognitive description CB in dynamic scenes iconic memory, masking