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Full-Text Articles in Neuroscience and Neurobiology
Spatial And State-Dependent Effects Of Transcranial Magnetic Stimulation Of Prefrontal Cortex In Non-Human Primates, Chao Gu
Electronic Thesis and Dissertation Repository
The indirect effects of transcranial magnetic stimulation (TMS) within a distributed neural network are still largely unknown. Here we propose to use the non-human primate (NHP) oculomotor system as an animal model for investigating the effects of TMS. Across three animals, single pulses of TMS to the prefrontal cortex (PFC), including the frontal eye fields (FEF), reliably evoked a contralateral head turning synergy, similar to what is seen following intracortical microstimulation. Furthermore, double pulses of TMS paired with the memory-guided saccade paradigm only evoked neck muscle activity preceding contralateral saccades, showing similar state-dependency as previously observed in human TMS studies. …
When Faces "Feel" Familiar: The Role Of Affective Signals In Face Recognition, Lauren E. Dunphy
When Faces "Feel" Familiar: The Role Of Affective Signals In Face Recognition, Lauren E. Dunphy
Electronic Thesis and Dissertation Repository
Previous research has suggested that there may be an increase in positive affect and autonomic arousal in response to seeing a familiar face. These studies rarely distinguish between faces for which there is only a “feeling” of familiarity, and faces for which this feeling is accompanied by the retrieval of semantic knowledge about the individual. In the current study we aimed to make that distinction. Participants made recognition judgments on famous and non-famous faces while galvanic skin responses (GSR), zygomatic muscle activity, and heart rate (HR) were recorded. We found increases in GSR (autonomic arousal), and zygomatic muscle activity (positive …