Transcranial Direct Current Stimulation (tDCS) perturbing vs enhancing semantic processing
We are investigating the ways that bilateral cathodal versus anodal direct electrical current stimulation of regions of the temporal lobe (e.g., temporoparietal junction vs. anterior temporal lobe) impact cognitive processing during semantic tasks (e.g., confrontation naming, semantic association ability). We are measuring behavioral performance using eyetracking.
Multi-dimensional scaling of abstract words
We are investigating how abstract words (e.g., truth, hope, love) cluster in semantic space in terms of emotion and magnitude and other psycholinguistic variables.
Concept acquisition and semantic access
We have created a variety of novel animated critters (pseudoanimals and artifacts). We teach people to name these. Using fMRI we are contrasting cortical activation for known relative to these newly learned item
Semantically-guided hiearchical visual search
We are using eyetracking to examine how task demands (e.g., Is this an animal or tool?; Is this predator or prey?) modulate patterns of visual search in patients with Alzheimer's Disease and frontotemporal dementia.