Signal Detection Theory and Psychophysics - Andrei Gorea

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Hits & FAHHHFAFAFAHTSchematic of a single trial used for the set size and thetarget number experiments. In the orientation andspatial frequency experiments, the colored squareswere replaced with Gabor patches.SADHigh-ThresholdSum Absolute Difference (SAD)MADMax Absolute Difference (MAD)ROCs obtained with a rating method on a 1-4 scale. Different symbols represent performance at different set sizes: set-size 2 for color, orientation and SF –red stars; set-size 4 for color and SF, set-size 3 for orientation – green triangles; set-size 6 for color and SF, set-size 4 for orientation – blue circles; set-size8 for color and SF, set-size 5 for orientation – purple squares.Wilken, P. & Ma, W.J (2004). A detection theory account of change detection. J. Vision 4, 1120-1135.
RRRResponsed’TRANSDUCTION & THRESHOLDNO THRESHOLDInputIIIp(R)I 0I 1I 2Input3
Page 1 and 2: THEORIE DE LA DETECTION DU SIGNALLa
Page 4 and 5: PhysicalWorldSensoryProcessesInfere
Page 6 and 7: z-ScoreOu « score normal » ou «
Page 8 and 9: P(z)p N (z=c)SIGNAL DETECTION THEOR
Page 10 and 11: Criterion settingObservers set a cr
Page 12 and 13: SDT: THE STANDARD MODELOptimal crit
Page 14: z(FA)1 - p > .5p < .51 - p < .5p >
Page 17 and 18: P(zpHReceiving Operating Characteri
Page 19 and 20: pHP(z)ROC & the Rating experimentOU
Page 21 and 22: PROBABABILITÉd’ with unequal var
Page 23 and 24: d’ with unequal varianceszH210-1-
Page 25 and 26: HIGH-THRESHOLD THEORY*The HTT propo
Page 27: P(z)pHP(z)pHIn the rest of thedecis
Page 31 and 32: RRResponsed’TRANSDUCTION & THRESH
Page 33 and 34: LA RELATION ENTRE Y/N & 2AFC1 20 SA
Page 35 and 36: P(z)P(z)P(z)Reasons for “invisibi
Page 37 and 38: P(z)% YESCRITERIONThe response crit
Page 39 and 40: CHANNELS, NOISEandSIGNAL DETECTION
Page 41 and 42: RESPONSE NORMALIZATIONNormalization
Page 43 and 44: RESPONSE (e.g. s/s)CHANNELS & RESPO
Page 45 and 46: RR = kIlog (I )RTRANSDUCTIONR kIs
Page 47 and 48: RR = log(I)log (I )RTRANSDUCTIONR
Page 51: Temps. RéactionTemps. RéactionTre
Page 54: Temps. RéactionTemps. RéactionTem

Signal Detection Theory and Psychophysics - Andrei Gorea

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