Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Western University

2023

Attention

Articles 1 - 2 of 2

Full-Text Articles in Life Sciences

Characterizing The Spatial Distribution Of Inhibitory Interneurons Across Early Sensory And Association Areas In Callithrix Jacchus, Nika Khajehdehi Nov 2023

Characterizing The Spatial Distribution Of Inhibitory Interneurons Across Early Sensory And Association Areas In Callithrix Jacchus, Nika Khajehdehi

Electronic Thesis and Dissertation Repository

The prefrontal cortex (PFC) is one of the cortical areas responsible for complex cognitive abilities, a function that is believed to arise from increased persistent activity within its microcircuits. Activity within microcircuits is regulated by parvalbumin-containing (PV), calbindin-containing (CB), and calretinin-containing (CR) inhibitory interneurons (INs). It remains unclear how the distribution of activity-regulating INs differs across cortical areas such that persistent activity increases specifically within association areas, allowing for their complex functions. This thesis aims to address this gap by characterizing the spatial distributions and differences in relative proportions of INs across early sensory areas and association areas of the …


Neural Dynamics Of Target Processing In Attentional Blink, Mansoure Jahanian Aug 2023

Neural Dynamics Of Target Processing In Attentional Blink, Mansoure Jahanian

Electronic Thesis and Dissertation Repository

The attentional blink (AB) phenomenon refers to the failure to report the second target (T2) if it appears 200-500 ms after the first target (T1) in a stream of rapidly presented images. The present study aimed to investigate the neural representations of target processing under conditions where AB does or does not occur. We recorded EEG and behavioral data while participants viewed a rapid sequence of natural object images embedded with two face targets presented at two lag conditions: lag 3 (targets were 252 ms apart) and lag 7 (targets were 588 ms apart). Consistent with AB, our behavioral results …