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Full-Text Articles in Life Sciences
Mapping Auditory And Vestibular Response Neurons In The Optic Tectum Of Larval Zebrafish, Erika Marks, Arminda Suli
Mapping Auditory And Vestibular Response Neurons In The Optic Tectum Of Larval Zebrafish, Erika Marks, Arminda Suli
Undergraduate Honors Theses
Cellular mapping of the sensory receptive fields of brain structures is a critical step in understanding function and dysfunction in development. Deficits in the ability to receive, process and integrate the senses leads to difficulties recognizing and responding appropriately to stimuli. To understand how the senses are integrated, it is first necessary to map the neurons receptive to inputs from individual senses. The optic tectum of zebrafish is a structure known for its homology to the superior colliculus of mammals and is a center of multisensory integration – including visual, auditory, and somatosensory stimuli. However, the microcircuitry of this important …
Dynamics Of Motor System Excitability During Auditory Anticipation, Justine Czajka
Dynamics Of Motor System Excitability During Auditory Anticipation, Justine Czajka
Undergraduate Honors Theses
The ability to anticipate complex sounds, like words in speech or the beat in music, is an important aspect of human perception. However, the changes of excitability in the motor system during auditory anticipation have not been characterized. Here, we applied single-pulse Transcranial Magnetic Stimulation (TMS) to the primary motor cortex to elicit motor evoked potentials (MEPs) from the first dorsal interosseous muscle, the amplitude of which indexes motor system excitability. Healthy right-handed participants (N = 20) underwent TMS stimulation during listening to regular (periodic) tone sequences at three rates (200ms, 550ms, and 900ms) and irregular tone sequences. We assessed …