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SUMMARY:Microsaccades strongly modulate but do not directly cause the EEG 
 N2pc marker of spatial attention - Daksh Mehta
DTSTART:20260123T140000Z
DTEND:20260123T150000Z
UID:TALK243619@talks.cam.ac.uk
CONTACT:Adam Triabhall
DESCRIPTION:This week we will discuss and debate a very recent paper by Li
 u and colleagues (2025).\n\nAbstract: “The N2pc is a popular human-neuro
 science marker of covert and internal spatial attention that occurs 200–
 300 ms after being prompted to shift attention—a time window also char
 acterized by the spatial biasing of small fixational eye movements known a
 s microsaccades. Here\, we show how co-occurring microsaccades profoundly 
 modulate N2pc amplitude during top-down shifts of spatial attention in bot
 h perception and working memory. At the same time\, we show that a signifi
 cant—albeit severely weakened—N2pc can still be established in the abs
 ence of co-occurring microsaccades. Moreover\, despite the strong modulati
 on of the N2pc by microsaccade presence and direction\, the N2pc does not 
 align to the precise timing of microsaccades\, ruling out that the observe
 d N2pc modulations by microsaccades are a direct artifact of microsaccade-
 related eye-muscle activity\, corneo-retinal dipole movement\, or visual i
 nputs moving over the retina. Thus\, while microsaccades strongly modulate
  N2pc amplitude\, microsaccades themselves are not a prerequisite for\, no
 r a direct cause of\, the N2pc” (Liu et al.\, 2025).\n\nReference: Liu\,
  B.\, Kong\, S.\, & van Ede\, F. (2025). Microsaccades strongly modulate b
 ut do not directly cause the EEG N2pc marker of spatial attention. PLoS Bi
 ology\, 23(9)\, e3003418. https://doi.org/10.1371/journal.pbio.3003418
LOCATION:https://cam-ac-uk.zoom.us/j/92612577704?pwd=MUtqMjVQdXNmUTVIYjRkM
 G1NUW9GZz09
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