Browsing Psychology by Author "O'MARA, SHANE"
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Automated spike sorting algorithm based on Laplacian eigenmaps and k-means clustering
O'MARA, SHANE; MILLER, JOHN (2011)This study presents a new automatic spike sorting method based on feature extraction by Laplacian eigenmaps combined with k-means clustering. The performance of the proposed method was compared against previously reported ... -
Chronic immobilization stress occludes in vivo cortical activation in an animal model of panic induced by carbon dioxide inhalation.
O'MARA, SHANE; KERSKENS, CHRISTIAN (2014)Breathing high concentrations of carbon dioxide (CO2) can trigger panic and anxiety in humans. CO2 inhalation has been hypothesized to activate neural systems similar to those underlying fear learning, especially those ... -
Dissociation of dorsal hippocampal regional activation under the influence of stress in freely behaving rats.
O'MARA, SHANE; PASSECKER, JOHANNES; CHAH, EHSAN; DELLA CHIESA, ANDREA; HOK, VINCENT (2011)Stress has deleterious effects on brain, body, and behavior in humans and animals alike. The present work investigated how 30-min acute photic stress exposure impacts on spatial information processing in the main sub-regions ... -
Hippocampal-anterior thalamic pathways for memory: uncovering a network of direct and indirect actions.
O'MARA, SHANE (2010)This review charts recent advances from a variety of disciplines that create a new perspective on why the multiple hippocampal?anterior thalamic interconnections are together vital for human episodic memory and rodent event ... -
Influences of photic stress on postsubicular head-directional processing
O'MARA, SHANE (2018) -
Nucleus reuniens of the thalamus contains head direction cells.
O'MARA, SHANE (2014)Discrete populations of brain cells signal heading direction, rather like a compass. These 'head direction' cells are largely confined to a closely-connected network of sites. We describe, for the first time, a population ... -
Objects & Place cells in Claustrum
O'MARA, SHANE (Trinity College Dublin, 2015) -
Prolonged rote learning produces delayed memory facilitation and metabolic changes in the hippocampus of the ageing human brain
DOHERTY, COLIN; ROBERTSON, IAN; O'MARA, SHANE; HAYDEN, JUDY (2009)Background: Repeated rehearsal is one method by which verbal material may be transferred from short- to long-term memory. We hypothesised that extended engagement of memory structures through prolonged rehearsal would ... -
Segregation of parallel inputs to the anteromedial and anteroventral thalamic nuclei of the rat
O'MARA, SHANE (2013)Many brain structures project to both the anteroven tral thalamic nucleus and the anteromedial thalamic nucleus. In the present stud y, pairs of different tracers were placed into these two thalamic sites in the same ... -
Suppressing the encoding of new information: A behavioral study derived from principles of hippocampal function.
O'MARA, SHANE (2013)Cognitive processes do not occur in isolation. Interactions between cognitive processes can be observed as a cost in performance following a switch between tasks, a cost that is greatest when the cognitive requirements ...