Open Access. Powered by Scholars. Published by Universities.®
Neuroscience and Neurobiology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Action planning (1)
- Cognitive control (1)
- Compulsive behavior (1)
- Conflict processing (1)
- Dimensional Change Card Sort (1)
-
- Distributed cortical source modeling (1)
- Event-related potentials (1)
- FMRI (1)
- Grasping (1)
- Hippocampus (1)
- Impulse control (1)
- Intention (1)
- Medial septum (1)
- Methamphetamine (1)
- Motor control (1)
- Parietal cortex (1)
- Pattern analysis (1)
- Pattern classification (1)
- Population spike (1)
- Premotor cortex (1)
- Psychostimulant (1)
- Reaching (1)
- Reproductive behavior (1)
- Rule switching (1)
- Saccades (1)
- Single unit (1)
- Substance abuse (1)
- Theta rhythm (1)
- Tool-use (1)
- Vestibular system (1)
Articles 1 - 4 of 4
Full-Text Articles in Neuroscience and Neurobiology
Septal Modulation Of The Hippocampus, Siew Kian Tai
Septal Modulation Of The Hippocampus, Siew Kian Tai
Electronic Thesis and Dissertation Repository
The medial septum (MS) is the main source of acetylcholine to the hippocampus, a structure involved in memory and Alzheimer’s disease (AD). Learning and memory involve long-term changes in synaptic strengths, and are suggested to be facilitated by a brain wave, theta rhythm in the hippocampus. Since medial septal neurons influence hippocampal neural activity, lesion of two neuronal populations in the MS, cholinergic and GABAergic, was performed by intraseptal infusion of 192 IgG-saporin and orexin-saporin, respectively. I hypothesized that 1) activation of cholinergic cells by vestibular stimulation induces an atropine-sensitive theta rhythm, modulates synaptic transmission and enhances long-term potentiation (LTP), …
Effects Of Methamphetamine On Sexual Behavior, Karla S. Frohmader
Effects Of Methamphetamine On Sexual Behavior, Karla S. Frohmader
Electronic Thesis and Dissertation Repository
Methamphetamine (Meth) is a highly addictive psychostimulant associated with enhanced sexual desire, arousal, and sexual pleasure. Moreover, Meth abuse is frequently linked with the practice of sexual risk behavior and increased prevalence of Human Immunodeficiency Virus (HIV). Currently, the neurobiological basis for this drug-sex nexus is unknown. Moreover, there is a lack of studies investigating the effects of Meth on sexual behavior and more importantly, compulsive sex-seeking behavior, under controlled experimental settings in animal models. First, using immuhistochemistry for mating- and Meth-induced neural activation it was demonstrated that Meth administration in male rats activates neurons in brain regions of the …
Decoding Motor Intentions From Human Brain Activity, Jason P. Gallivan
Decoding Motor Intentions From Human Brain Activity, Jason P. Gallivan
Electronic Thesis and Dissertation Repository
“You read my mind.” Although this simple everyday expression implies ‘knowledge or understanding’ of another’s thinking, true ‘mind-reading’ capabilities implicitly seem constrained to the domains of Hollywood and science-fiction. In the field of sensorimotor neuroscience, however, significant progress in this area has come from mapping characteristic changes in brain activity that occur prior to an action being initiated. For instance, invasive neural recordings in non-human primates have significantly increased our understanding of how highly cognitive and abstract processes like intentions and decisions are represented in the brain by showing that it is possible to decode or ‘predict’ upcoming sensorimotor …
Dissociable And Dynamic Components Of Cognitive Control: A Developmental Electrophysiological Investigation, Matthew Waxer
Dissociable And Dynamic Components Of Cognitive Control: A Developmental Electrophysiological Investigation, Matthew Waxer
Electronic Thesis and Dissertation Repository
One standard task used to investigate the development of cognitive control is the Dimensional Change Card Sort (DCCS). Performance and patterns of brain activity associated with the DCCS show continued age-related advances into early adolescence. According to many theoretical accounts, the DCCS places demands on a single underlying executive control process. Three experiments examined the possibility that the DCCS places demands on multiple control processes that follow distinct developmental trajectories. In Experiment 1, rule switching and conflict processing made orthogonal contributions to DCCS performance. Rule switching was associated with a cue-locked late frontal negativity (LFN) event-related potential (ERP) and conflict …