A Rapid Subcortical Amygdala Route for Faces Irrespective of Spatial Frequency and Emotion
Jessica McFadyen, Martial Mermillod, Jason B Mattingley, Veronika Halasz, Marta I Garrido
The Journal of Neuroscience | SOC NEUROSCIENCE | Published : 2017
There is significant controversy over the existence and function of a direct subcortical visual pathway to the amygdala. It is thought that this pathway rapidly transmits low spatial frequency information to the amygdala independently of the cortex, and yet the directionality of this function has never been determined. We used magnetoencephalography to measure neural activity while human participants discriminated the gender of neutral and fearful faces filtered for low or high spatial frequencies. We applied dynamic causal modeling to demonstrate that the most likely underlying neural network consisted of a pulvinar-amygdala connection that was uninfluenced by spatial frequency or emotion, ..View full abstract
Awarded by Australian Research Council (ARC) Centre of Excellence for Integrative Brain Function ARC Centre Grant
Awarded by ARC Australian Laureate Fellowship
Awarded by University of Queensland Fellowship
This work was supported by the Australian Research Council (ARC) Centre of Excellence for Integrative Brain Function ARC Centre Grant CE140100007. J.B.M. was supported by ARC Australian Laureate Fellowship FL110100103. M.I.G. was supported by University of Queensland Fellowship 2016000071. J.M. was supported by an Australian Postgraduate Award. We thank Will Woods, Johanna Stephens, Mahla Cameron-Bradley, and Rachael Batty (Swinburne University) for help in collecting the MEG data; and two anonymous reviewers for insightful comments.