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Ilja Sligte

Biography

Ilja Gabriël Sligte was born and raised in Amsterdam. Favorite things to do besides scientific research: playing bridge (competitively), practicing martial arts (taekwondo), wakeboarding, computer games (shooters, RPGs), eating and drinking fine food.

Research

The neural dynamics of visual short-term memory. The interaction between attention and visual processing.

How much information can we keep in mind of what we have just seen? According to traditional theories, quite some information in iconic memory for about half a second after stimulus disappearance, and afterwards only about four objects in visual working memory. Research from our lab (Landman et al., 2003, 2004; Sligte et al., 2008, 2009) suggests that this two-partite division of visual short-term memory (VSTM) is incorrect. Rather, it seems that people maintain 1) up to 30 objects in a feature-based, iconic memory store for just a few hundred milliseconds after stimulus offset, 2) up to 15 objects in an object-based, fragile VSTM store up to four seconds after stimulus offset, and 3) only about 3-4 objects in an attention-based, sustained working memory store. These different memory stages depend on reverberating activity in primary visual areas (“feature-based”), extrastriate visual cortex (“object-based”), and frontoparietal areas (“attention-based”).

1. Vandenbroucke ARE, Fahrenfort JJ, Sligte IG & Lamme VAF (in press). Seeing without knowing: Neural signatures of perceptual inference in the absence of report. Journal of Cognitive Neuroscience.-
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2. Sligte IG, van Moorselaar D, Vandenbroucke ARE (2013) Decoding the contents of visual working memory: Evidence for process-based and content-based working memory areas? Journal of Neuroscience 33(4):1293–94 -
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3. Pinto, Y, Sligte, IG, Shapiro, KL, Lamme, VAF (2013) Fragile visual short-term memory is an object-based and location-specific store. Psychonomic Bulletin and Review. doi:10.3758/s13423-013-0393-4-
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4. Vandenbroucke ARE*, Sligte IG*, Fahrenfort JJ, Ambroziak KB, Lamme VAF (2012) Non-attended representations are perceptual rather than unconscious in nature. PLoS ONE 7(11): e50042. doi:10.1371/journal.pone.0050042-
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5. Wokke ME, Sligte IG, Scholte HS, Lamme VAF (2012) Two critical periods in early visual cortex during figure–ground segregation Brain and Behavior 2(6): 763-77-
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6. Sligte IG, Wokke ME, Tesselaar JP, Scholte HS, Lamme VAF. (2011). Magnetic stimulation of the dorsolateral prefrontal cortex dissociates fragile visual short-term memory from visual working memory. Neuropsychologia 49, 1578-88.-
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7. Vandenbroucke ARE, Sligte IG, Lamme VAF (2011). Manipulations of attention dissociate fragile visual short-term memory from visual working memory. Neuropsychologia 49, 1559-68.-
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8. Sligte IG, Vandenbroucke ARE, Scholte HS, Lamme VAF. (2010) Detailed sensory memory, sloppy working memory. Front Psychology 1(175), 1-10.-
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9. Sligte IG, Scholte HS, Lamme VAF (2009). V4 activity predicts the strength of visual short-term memory representations. J Neurosci., 29(23), 7432-8. -
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10. Sligte IG, Scholte HS, Lamme VAF. (2008). Are there multiple visual short-term memory stores? PLoS One., 3(2), e1699.-
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