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Full-Text Articles in Life Sciences
Neural Responses To Magnetic Orientation Information In Songbirds, Madeleine Ir Brodbeck
Neural Responses To Magnetic Orientation Information In Songbirds, Madeleine Ir Brodbeck
Electronic Thesis and Dissertation Repository
Effective navigation and orientation is essential for animals to survive. The study of migratory birds provides insights into these processes, particularly through mechanisms like the geomagnetic compass, which uses Earth's magnetic field for directional information. A brain region in songbirds relevant to this is cluster N, known for its potential role in processing geomagnetic information. Notably, cluster N appears exclusive to nocturnally migratory birds, being active solely at night, and lesion studies reveal that an intact cluster N is necessary for geomagnetic compass orientation. However, given the scarcity of empirical data concerning cluster N, substantial questions persist regarding its function. …
The Modulation Of Lfp Characteristics In The Freely Moving Common Marmoset, William Jm Assis
The Modulation Of Lfp Characteristics In The Freely Moving Common Marmoset, William Jm Assis
Electronic Thesis and Dissertation Repository
The hippocampus is a neural structure critical for navigation. Neurons in this region, along with others, create a functional network which generates large-amplitude modulations known as local field potential (LFP) activity. Prior LFP research has predominantly used rodent animal models, however recent studies have shown that frequencies associated with navigation in other mammals do not correlate to those of the rodent. We hypothesized that LFP characteristics in the common marmoset are modulated by the speed and axis of travel of the animal. Two marmosets were placed in a free moving 3-dimensional environment where movement and neurological activity were recorded. Results …