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Diffusion Models to Distinguish Endogenous and Exogenous Temporal Attention

Student: Alexey Asvarishch

Supervisor: W.Joseph MacInnes

Faculty: Institute for Cognitive Neuroscience

Educational Programme: Cognitive Sciences and Technologies: From Neuron to Cognition (Master)

Final Grade: 7

Year of Graduation: 2019

The allocation of attention can occur not only in space but also in time. Application of Rescorla's "truly random control" procedure about the independence of cues and targets allowed us to differentiate the impact of endogenous (voluntary) and exogenous (automatic) components of temporal attention on the performance separately and within their interaction. Unlike previous studies, we have got results showing that when Endogenous attention operates alone, it worsens the RT performance, compared to the baseline condition. We also have got significant three-way interaction that shows that Endogenous orienting of attention differ from baseline condition over SOAs. This main effect of Contingency might be well explained by later IOR effect. This result is also supported by the drift-diffusion model, which shows that decreased drift rate represents pure performance drop for Endogenous orienting. There was no main effect of Intensity or Exogenous orienting of attention.

Full text (added May 13, 2019)

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