Open Access. Powered by Scholars. Published by Universities.®
- Institution
- Keyword
-
- Anticipation (1)
- Auditory (1)
- Auditory Anticipation (1)
- Auditory-Motor (1)
- Auditory-motor integration (1)
-
- Beat Perception (1)
- Courtship (1)
- Dopamine (1)
- Drosophila (1)
- Drosophila melanogaster (1)
- Isochronous (1)
- Motor System (1)
- Neurons (1)
- Neuroscience (1)
- Neurotransmitter (1)
- Oviposition (1)
- Rhythms (1)
- Sleep (1)
- Sleep deprivation (1)
- Sleep disorders (1)
- Synchronization (1)
- TMS (1)
- Trancranial Magnetic Stimulation (1)
Articles 1 - 4 of 4
Full-Text Articles in Entire DC Network
Examining The Neuronal Dopaminergic Pathway Underlying Sleep Behavior And Related Dopamine Sleep Disorders, Mary Beth Putz
Examining The Neuronal Dopaminergic Pathway Underlying Sleep Behavior And Related Dopamine Sleep Disorders, Mary Beth Putz
Undergraduate Honors Theses
The human brain is an extremely complex organ with approximately 100 billion different neurons that are constantly sending and receiving messages. These messages are sent using the chemical messengers of the brain: neurotransmitters and neuromodulators. Mechanisms of neural control of sleep are substantially conserved across species. Evidence from multiple animal models including flies, zebrafish, and mice shows that the arousal, or wake phase, is regulated by conserved neuromodulators such as dopamine, norepinephrine, and serotonin. Since these neurotransmitter systems are distributed throughout the brain and sub-serve many functions in addition to sleep, the precise circuit mechanisms by which these neurotransmitters regulate …
Effects Of Sleep-Deprivation On Decision-Making And Action Selection, Shalin N. Shah
Effects Of Sleep-Deprivation On Decision-Making And Action Selection, Shalin N. Shah
Undergraduate Honors Theses
This thesis addresses neuroscience research focusing on the brain’s mechanisms underlying behavioral choice, or prioritization, and decision-making. The research has been conducted with Drosophila melanogaster, the fruit fly – a good model from both the behavioral and neural perspectives. This project specifically observes the co-regulation of sleep with two other behaviors – courtship and oviposition. The overlap between the sleep and courtship circuits in the brain should provide a good model for behavioral prioritization, and the interaction between sleep and ovipositional preference should provide a model for understanding the effects of sleep on decision-making. All three of these adaptive behaviors …
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 …
Transcranial Magnetic Stimulation To Assess Motor System Excitability Fluctuations During Auditory Anticipation And Beat Perception, Johannes G.P Teselink
Transcranial Magnetic Stimulation To Assess Motor System Excitability Fluctuations During Auditory Anticipation And Beat Perception, Johannes G.P Teselink
Undergraduate Honors Theses
Humans tend to spontaneously move to the regular beat of musical rhythm. Beat perception is the tendency to sense and anticipate the regular time positions (beats) that movements synchronize with. The neural motor system plays an important role in beat perception, but the dynamics of excitability in the motor system associated with beat perception have not been characterized. This project investigated motor system excitability fluctuations using transcranial magnetic stimulation and electromyography during perception of beat-based and non-beat-based rhythms. We applied single-pulse TMS over the left primary motor cortex of healthy participants as they listened to three types of rhythms that …