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Zirnsak, Marc: Attention induced distortions of neural population responses, receptive fields, and tuning curves. 2009
Inhalt
General introduction
Overt shifts of space-based attention
Introduction
The need for saccades
The enhanced processing of the future fixation
Peri-saccadic compression of visual space
Introduction
Model of peri-saccadic processing
Peri-saccadic compression in the model
The origin of the feedback signal
Cortical magnification and the shape of the feedback signal in visual space
Where does visual compression occur in the brain?
Discussion
Peri-saccadic receptive field shifts
Introduction
Mapping of model receptive fields
Changes in receptive field size
Changes in the number of responsive cells
One-probe remapping test
Two-probe remapping test
Continuous remapping test
Discussion
Discussion
Directing global feature-based attention
Introduction
Experimental procedure
The altered metric of feature space
Discussion
General discussion
References
Appendix A: Space-based attention
Mathematical description of the model
Hierarchical visual processing
Gain modulation
Visuo-cortical mapping
Computation of distances in visual space
Computation of distances in cortical space
Simulation of eye movements
Fitting procedure and parameters of the model
Predicting source and targets of the feedback signal
Decoding of the population response
Computation of mean errors
Proportional reduction in error measure
Appendix B: Feature-based attention
Control experiment 1: Contrast dependency
Control experiment 2: Unattended motion
Statistical analysis
Model of feature-based attention
Eye movements