Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
French Presentation - Bachelor's thesis
1. BOOSTED BOUNCE :
RÔLE DES FRÉQUENCES SPATIALES
DANS L’ATTENTIONAL BLINK
Sous la direction de
Pr. Mermillod Martial & Beffara Brice, doctorant
Perrier Mickaël
M1 Psychologie Cognitive et Sociale
25 Juin 2015
5. INTRODUCTION
ATTENTIONAL BLINK
Rapid SerialVisual Presentation
(RSVP)
• SOA ± 100 ms
• Lag = intervalle entre les cibles
Lag→ 200 < Lag < 500 ms
• Distracteurs
‣ Nécessaires (e.g.,Ward, Duncan, & Shapiro,
1997)
‣ Modulent (e.g., Müsch et al., 2012)
Propotionreportcorrect(%)
0 %
25 %
50 %
75 %
100 %
Lag inter-cibles (ms)
Lag 0 Lag 2 Lag 4 Lag 6 Lag 8
T1 T2
5
Figure 2. Données typiques
1
B
3
tem
ps
T1
T2
lag
A
7
5100 ms
+
100 ms
100 ms
100 ms
100 ms
100 ms
Figure 1. Procédure typique (lag 2)
6. ATTENTIONAL BLINK
Modèle “Boost & Bounce”
Olivers & Meeter (2008)
1. Traitements perceptifs
2. Mémoire de travail: “Template matching”
‣ Boost: représentations pertinentes
‣ Bounce: représentations non pertinentes
‣ Dynamique: pic à 100 ms
6
17. RÉSULTATS
• ANOVA (S43 × L3 × D4)
Lag
F(1.63, 68.38) = 110.4, p < .001
Distracteur
F(3, 126) = 13.97, p < .001
Interaction
F(6, 252) = 7.09, p < .001
17
Figure 4. Report moyen deT2
ProportiondeT2rappelé
0
0,25
0,5
0,75
Lag 1 Lag 3 Lag 8
NF BFS HFS Masque
18. RÉSULTATS
• t-tests pour échantillons appariés
Lag 3: BFS vs. HFS
t(42) = −3.85, p < .001
Lag 8: BFS vs. HFS
t(42) = 3.57, p < .001
Lag 3: NF vs. BFS
t(42) = −1.34, p = .19
Lag 8: HFS vs. Masque
t(42) = 2.29, p = .027
18
Figure 4. Report moyen deT2
ProportiondeT2rappelé
0
0,25
0,5
0,75
Lag 1 Lag 3 Lag 8
NF BFS HFS Masque
ProportiondeT2rappelé
0
0,25
0,5
0,75
Lag 1 Lag 3 Lag 8
NF BFS HFS Masque
ProportiondeT2rappelé
0
0,25
0,5
0,75
Lag 1 Lag 3 Lag 8
NF BFS HFS Masque
ProportiondeT2rappelé
0
0,25
0,5
0,75
Lag 1 Lag 3 Lag 8
NF BFS HFS Masque
19. DISCUSSION
• Lag 3: BFS < HFS
‣ BFS modulent processus visuo-attentionnel
‣ “Anticipation” participe à la conscience
• Lag 8: BFS > HFS
‣ Hypothèse dynamique “coarse-to-
fine” (Schyns & Oliva, 1994)
• Suite:
‣ Plus de lags
‣ Blink cross-modal
%reportdeT2
0 %
25 %
50 %
75 %
100 %
Lag 1 Lag 3 Lag 5 Lag 7
NF BFS HFS
Figure 5. Hypothèse “coarse-to-fine”
21. RÉFÉRENCES
1. Bar. (2009).The proactive brain: memory for
predictions. Philosophical Transactions of The
Royal Society B.
2. den Ouden, Kok, & de Lange. (2012). How
predictions errors shape perception,
attention, and motivation. Frontiers in
Psychology.
3. Bar. (2003).A cortical mechanism for
triggering top-down facilitation in visual object
recognition. Journal of cognitive Neuroscience.
4. Bar, et al. (2006)Top-down facilitation of
visual recognition. Proceedings of the National
Academy of Sciences.
5. Panichello, Cheung, & Bar. (2013). Predictive
feedback and conscious visual experience.
Frontiers in Psychology.
6. Ward, Duncan, & Shapiro. (1997). Effects of
similarity, difficulty, and nontarget presentation
on the time course of visual attention.
Perception & Psychophysics.
7. Müsch, Engel, & Schneider. (2012). On the
blink:The importance of target-distractor
similarity in eliciting an attentional blink with
faces. PLoS One.
8. Olivers & Meeter. (2008).A Boost and
bounce theory of temporal attention.
Psychological Review.
9. Schyns. & Oliva. (1994). From blobs to
boundary edges: evidence for time- and
spatial-scale-dependent scene recognition.
Psychological Science.
23. ANOVA
Source SCobs ddl MCobs Fobs
S SCSobs n − 1
A SCAobs r − 1 MCAobs FA obs
AS SC(AS)obs (r − 1)(n − 1) MC(AS)obs
B SCBobs c − 1 MCBobs FB obs
BS SC(BS)obs (c − 1)(n − 1) MC(BS)obs
AB SC(AB)obs (r − 1)(c − 1) MC(AB)obs FAB obs
R SCRobs (r − 1)(c − 1)(n − 1) MCRobs
Total SCTobs N − 1
24. Lag 1 Lag 3 Lag 8 Μ
NF 0,45 0,21 0,49 0,38
BFS 0,42 0,23 0,56 0,40
HFS 0,45 0,31 0,49 0,42
Mask 0,41 0,20 0,44 0,35
Μ 0,43 0,24 0,50
ANOVA
Source SCobs
S SCSobs
A SCAobs
AS SC(AS)obs
B SCBobs
BS SC(BS)obs
AB SC(AB)obs
R SCRobs
Total SCTobs
SCAobs = nc (y0i0 - y)2
j = 1
r
|
SCBobs = nr (y00j - y)2
j = 1
c
|
SC(AB)obs = SC(A # B)obs - SCAobs - SCBobs
SC(A # B)obs = n (y0ij - y)2
j = 1
c
|
i = 1
r
|
25. TESTS NON-PARAMÉTRIQUES
Test de Friedman: p < .001
Tests de Wilcoxon:
BFS 3 vs. HFS 3:
Z = −2.206, p = .017
BFS 8 vs. HFS 8:
Z = −2.387, p = .002
NF 3 vs. BFS 3:
Z = −3.078, p = .027
HFS 8 vs. Masque 8:
Z = −2.074, p = .038
ProportiondeT2rappelé
0
0,25
0,5
0,75
Lag 1 Lag 3 Lag 8
NF BFS HFS Masque
Figure 5. Report moyen deT2|T1