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Neuronal interactions occurring in the mammalian brain are a widely discussed, intriguing and appealing topic. How different brain areas mutually and coherently process complex natural stimuli to coordinate elaborate behaviors remains a field of controversy. My Ph.D. project focuses on investigating how functional interactions occur between two cortical regions in the brain of the short-tailed fruit eating bat Carollia perspicillata: the auditory cortex (AC) and the frontal auditory field (FAF), two regions that are involved in different stages of the processing of echolocation and communication calls. My main interest lies in quantifying and describing neuronal coherence and other forms of dual processing in the cortex of the bat as it parses naturalistic acoustic streams, mainly focusing on the temporal structure of the perceived sounds. Additionally, I intend to complement the aforementioned approaches by imposing cortical rhythms and assessing their importance for eliciting or altering neuronal and physiological responses. Alongside the description of the functional coupling between the AC and the FAF, I want to support the results with anatomical proof of an existing physical connection between a specialized auditory region (the auditory cortex), and a region that is traditionally deemed important for multimodal sensory integration and behavioral planning (the frontal cortex).
Beetz M J, García-Rosales F, Kössl M, Hechavarría J C, (2018) Robustness of cortical and subcortcal processing in the presence of natural masking sounds DOI:10.1038/s41598-018-25241-x
García-Rosales F, Martin L M, Beetz M J, Cabral-Calderin Y, Kössl M, Hechavarría J C, (2018) Low-Frequency Spike-Field Coherence Is a Fingerprintof Periodicity Coding in the Auditory Cortex. https://oi.org/10.1016/j.isci.2018.10.009
Martin L M, García-Rosales F, Beetz M J, Hechavarría J C, (2017) Processing of temporally patterned sounds in the auditory cortex of Seba's short-tailed bat, Carollia perspicillata DOI:10.1111/ejn.13702
Beetz M J, Kordes S, García-Rosales F, Kössl M, Hechavarría J C, (2017) Processing of Natural Echolocation Sequences in the Inferior Colliculus of Seba's Fruit Eating Bat, Carollia perspicillata DOI:http://dx.doi.org/10.15.23/ENEURO.0314-17.2017