We evaluate nine algorithms for the correction of “vertical drift” in eye tracking data — the vertical displacement of fixations that results from a gradual loss of eye tracker calibration over time. This correction is particularly important for experiments that involve reading multiline texts because it is critical that fixations on one line of text are not erroneously assigned to an adjacent line. Our results — based on both simulated and natural eye tracking data — show that certain algorithms are better than others on particular kinds of vertical drift and reading behavior.

Recent evidence points to the anterior temporal lobe (ATL) as a crucial semantic hub integrating both abstract and concrete conceptual features according to a dorsal-to-medial gradient. It is however unclear when this conceptual gradient emerges and how semantic information reaches the ATL during conceptual retrieval. Here we addressed this issue via a multiple regression approach to magnetoencephalography signals of spoken words, combined with dimensionality reduction in concrete and abstract semantic feature spaces. Results showed that the dorsal-to-medial abstract-to-concrete ATL gradient emerges only in late stages of word processing: Abstract and concrete semantic information are initially encoded in posterior temporal regions and travel along separate cortical pathways eventually converging in the ATL.

The paper is available as a pre-print on bioRxiv.

This paper investigates inflectional suffix priming in Slovene, and compare it to stem priming. Read more in the paper pre-print here.