Voices Facilitate Visual Search for Congruent Faces Jacob 1 Zweig , Marcia 1,2 Grabowecky , Northwestern University, Department of Satoru 1,2 Suzuki ! 1 Psychology and Interdepartmental Neuroscience 2) Can voices, that convey no location information about a target face, facilitate visual search for congruent faces? Training NIH R01EY021184 Results No significant differences in accuracy Visual Search display appeared synchronously with the onset of one of three sounds.! ! Participants responded by indicating the quadrant in which the target face was present.! ! Three voices were counterbalanced across participants (2 used for training, 1 for unlearned voice)! 100%$ Mean Accuracy 1) Can multisensory correspondences be formed through brief training? Evanston, IL! Accuracy by Voice Condition 90%$ 80%$ 70%$ 60%$ 50%$ Congruent Learned Reversed 3.0# Response Time by Accuracy 2.5# 2.0# 1.5# 1.0# 0.5# 0.0# Correct Response times on congruent learned voice trials were significantly faster than reversed and novel unlearned voice trials (N=12). Response Time by Voice Condition Phase 1 Pre-recorded voice played simultaneously with face. Participants were trained with 10 repetitions of 2 faces (20 total views). Hey, it’s me Michael! Phase 2 Participants selected the face that matched the heard voice until criterion of 25 consecutive correct responses was met Incorrect Conclusions Results Hi my name is Michael, I’m 22 years old and I teach Monkeys sign language. Unlearned No evidence of speed-accuracy trade off Mean Reaction Time (s) Multisensory correspondences can enhance the detection, localization, and response to targets when correspondences are in agreement across modalities1,2,3. 2 Program , Visual Search Introduction 3.2$ Correct Mean Reaction Time (s) * 3.0$ Congruent voices facilitated visual search for faces. Crossmodal associations can be formed through brief training, and are likely to be strengthened through repeated spatial and/or temporal coincidence. ** 2.8$ References 2.6$ 1. Iordanescu, L., Guzman-Martinez, E., Grabowecky, M., & Suzuki,(2008). Characteristic sounds facilitate visual search. Psychonomic Bulletin & Review, 15(3), 548–554. 2.4$ 2. Iordanescu, L., Grabowecky, M., Franconeri, S., Theeuwes, J., & Suzuki, S. (2010). Characteristic sounds make you look at target objects more quickly. Attention, perception & psychophysics, 72(7), 1736–41. 3. Chen, Y.-C., & Spence, C. (2010). When hearing the bark helps to identify the dog: semantically-congruent sounds modulate the identification of masked pictures. Cognition, 114(3), 389–404 2.2$ 2.0$ Congruent Learned Reversed Unlearned Overall ANOVA: [F(2,22) = 6.99, p < .01, η2 = 0.39]. Congruent Learned voice trials were 0.19 seconds faster, on average, than Reversed voice trials [t(11) = 4.06, p < .01]. Congruent Learned voice trials were 0.42 seconds faster, on average, than Novel Unlearned voice trials [t(11) = 3.01, p < .05]
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