Stanciu, O . & Fiser , J. (2022) Do humans recalibrate the confidence of advisers or take their confidence at face value? Proceedings of the Annual Meeting of the Cognitive Science Society 44 (44) [Abstract]
Who we choose to learn from is influenced by the relative confidence of potential informants. More confident advisers are preferred based on an assumption that confidence is a good indicator of accuracy. However, oftentimes, accuracy and confidence are not calibrated, either due to strategic manipulations of confidence or unintentional failures of metacognition. When accuracy information […]
Lengyel G. & Fiser J. (2018) Can task irrelevant statistical structure enhance perceptual learning? ECVP 2018 [Abstract]
Statistical learning (ability to extract and store new structures) and perceptual learning (improve visual discrimination abilities) traditionally thought to deal with separate tasks at different levels of visual processing. To test this conviction, we investigated whether perceptual learning can be enhanced by the presence of a task irrelevant statistical structure. We trained two groups (N=16) […]
Lengyel G. & Fiser J. (2016) The relation between initial thresholds, learning, and generalization in three perceptual learning paradigms. VSS 2016, Journal of Vision 16 (12), 1104-1104 [Abstract]
It has been suggested recently that the extent of learning in perceptual tasks can be predicted well from the initial performance according to a Weber-like law. However, the exact relationship between initial thresholds and the amount of learning and the link between learning and generalization still remained unclear. In three perceptual learning paradigms, we tested […]
Arató J. & Fiser J. (2014) Learning about the Structure of Probabilistic Visual Events. BCCCD 2014, Budapest, Hungary [Abstract]
There is increasing evidence suggesting, that people encode dynamic visual information probabilistically. However, the mechanism of this phenomena is unknown. Recently Kidd et al (2012) investigated, how predictability of varying visual stimuli influences attention and learning in infants. Their main finding was, that infants maintain attention longest for stimuli, that have intermediate predictability. Such a […]
Popovic M., Haefner R. M., Lengyel M. & Fiser J. (2013) Psychophysical evidence for a sampling-based representation of uncertainty in low-level vision. COSYNE 2013, Salt Lake City, UT [Abstract]
Human and animal studies suggest that human perception can be interpreted as probabilistic inference that relies on representations of uncertainty about sensory stimuli suitable for statistically optimal decision-making and learning. It has been proposed recently that the way the brain implements probabilistic inference is by drawing samples from the posterior probability distribution, where each sample […]
Stanciu, O . & Fiser , J. (2022) Benefits of active learning for teachers Proceedings of the Annual Meeting of the Cognitive Science Society 44 (44) [Abstract]
Good teachers and good active learners share the ability to generate samples (examples or queries, respectively) that are informative in light of current knowledge. In line with this, the current experiment found that active learners outperformed yoked passive learners in a subsequent category teaching task. The learning task was replicated from Markant and Gurekis (2014) […]
Reguly H., Nagy M., Márkus B. & Fiser J. (2018) Prior experience of stimulus co-occurrence increases sensitivity to visual temporal asynchrony. ECVP 2018 [Abstract]
The temporal relationship between sensory events plays a crucial role in establishing causal link between them, for example inferring a common cause. In the current study, we manipulated the probability of co-occurrence of various visual stimuli pairs to see whether this manipulation would affect participants’ ability to separate the two elements of a pair in […]
Christensen, J. H., Bex, P.J., & Fiser, J. (2016) Encoding of basic visual attributes in naturalistic-like human vision Annual Meeting of the European Mathematical Psychology Group, Copenhagen, Denmark [Abstract]
Coding of visual attributes in human vision has traditionally been researched with simple stimuli (e.g., Gabor patches), presented either in isolation or in simple lattice-like arrangements. Consequently, little is known about how low-level feature information is represented with complex and naturalistic images under natural-like viewing conditions. In severalexperiments, we examined coding of the orientation and […]
Karuza EA., Emberson LL., Roser ME., Gazzaniga MS., Cole D., Aslin RN. & Fiser J. (2014) Dynamic shifts in connectivity between frontal, occipital, hippocampal and striatal regions characterize statistical learning of spatial patterns. VSS 2014, Journal of Vision 14 (10), 955-955 [Abstract]
Extensive behavioral evidence has revealed that humans automatically develop internal representations that are adapted to the temporal and spatial statistics of the environment. However, the neural systems underlying this statistical learning process are not fully understood. Recently, various neuroimaging methods have been employed to examine this topic, but these studies have focused exclusively on temporally […]
Haefner RM., Berkes P. & Fiser J. (2013) Perceptual decision-making in a sampling-based neural representation. COSYNE 2013, Salt Lake City, UT [Abstract]
Most computational models of the responses of sensory neurons are based on the information in external stimuli and their feed-forward processing. Extrasensory information and top-down connections are usually incorporated on a post-hoc basis only, e.g. by postulating attentional modulations to account for features of the data that feed-forward models cannot explain. To provide a more […]