Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 80 for “"olfactory bulb"”.
-
Connectivity of olfactory bulb dopaminergic interneurons
… a vast amount of local processing happens in the olfactory bulb, where the olfactory signal enters the brain. As such, the olfactory bulb is home to a large and diverse population of inhibitory interneurons that greatly outnumber the excitatory neurons. These are responsible for processing the …
-
Investigating Experience-Dependent Plasticity in the Accessory Olfactory Bulb
… information processing in the mouse accessory olfactory system (AOS) guides the expression of social behavior. After salient chemosensory encounters, the accessory olfactory bulb (AOB) experiences changes in the balance of excitation and inhibition at reciprocal synapses between mitral cells …
-
Activity-Dependent Plasticity in the Murine Olfactory Bulb Neurons
… manner, with a specific focus on the olfactory system. To understand whether there are common plasticity themes amongst sensory systems, we conducted a systematic review of the literature describing sensory-deprivation-induced plasticity mechanisms at the first pre-cortical brain …
-
Mechanisms Underlying Learning Mediated Plasticity in the Adult Mammalian Olfactory Bulb
The olfactory system is rapidly modified by learning, starting at the first informational relay station. The olfactory bulb retains high levels of plasticity throughout adulthood and undergoes lasting structural changes following classic learning paradigms. Recent studies are starting to elucidate …
-
Habituation and Dishabituation in the Olfactory Bulb: From Neural Responses to Behavior
… was to characterize these processes in the mouse olfactory bulb (OB) and to determine if OB acetylcholine (ACh) has a role in physiological and behavioral olfactory dishabituation. Calcium imaging was used to determine the timecourse and magnitude of habituation in different parts of the OB during …
-
Fear Learning and the Olfactory Bulb: Neural Correlates of Behavioral Fear Generalization
… into behaviorally treating them as the same. The olfactory bulb (OB) represents an ideal model system for studying the extent to which fear learning alters sensory coding in ways that support failure of perceptual discrimination due to its odotopic organization that creates unique “maps” of odor …
-
The Guidance of Olfactory Sensory Axons to Identifiable Protoglomeruli in the Larval Zebrafish Olfactory Bulb
During development, sensory neurons in the olfactory epithelium extend axons into the olfactory bulb. The earliest axons to enter the bulb terminate onto distinct neuropilar condensations called protoglomeruli. Protoglomeruli are thought to segregate into individual glomeruli later in development. …
-
Cell proliferation and metal accumulation in the subventricular zone and olfactory bulb in Parkinson’s disease
… motor symptoms develop. Possible causes for this olfactory dysfunction include a decrease in subventricular zone neurogenesis, caused by dopaminergic denervation of this region, or an accumulation of metals from the environment. In this thesis, immunohistochemistry was used to investigate …
-
Paradoxically Sparse Chemosensory Tuning in Broadly-Integrating External Granule Cells in the Mouse Accessory Olfactory Bulb
The file named "ZHANG-PRIMARY-2022-1.pdf" is the primary dissertation file. Seven (7) supplemental video files are also available and may be viewed individually.
-
Interactions of Thyroid Hormones, Nerve Growth Factor and Its Receptors in Development and Plasticity of the Rat Olfactory Bulb
Hypothyroidism decreased levels of olfactory bulb NGF, while up-regulating NGF receptors, p75$\sp{\rm NTR}$ and trkA in the glomerular region. We propose that decreased bulbar NGF results in decreased trophic support for specific NGF responsive cells, leading to compensatory up-regulation of NGF …
-
Influence of Thyroid Hormonal Status on Gene Expression for Calcium Channels in the Developing Olfactory Bulb and Cerebellum of the Postnatal Rat
… to development in the cerebellum than in the olfactory bulb. While expression appears to be regulated developmentally and by thyroid hormones, the effects are varied depending on both the tissue and channel. Taken together, this suggests that thyroid hormones due influence the expression of …
-
Encoding and Processing of Accessory Olfactory System Odorants
The accessory olfactory system is a mouse olfactory subsystem dedicated to the processing of nonvolatile odors originating from the excretions of other animals. Accessory olfactory system activity drives behaviors critical for mouse survival such as mating, aggression, and predator avoidance. …
-
Axon Guidance In The Mouse Olfactory System
Within the mouse olfactory system, 1200 different types of olfactory sensory neurons use molecular cues to appropriately target stereotyped locations within the olfactory bulb. Recent studies reveal that some of these molecular cues are regulated by olfactory receptor mediated neuronal activity. …
-
Photoperiodism in the ewe: Endogenous circannual rhythms and olfactory mechanisms influencing reproductive activity
… is photoperiod-dependent and whether or not the olfactory system exerts a tonic influence on the hypothalmo-pituitary axis to modulate photoperiod responses. The majority of gonadal-intact ewes maintained for more than three years under two different constant photoperiod and restricted …
-
Magnetic Resonance Imaging (Mri) Studies of the Rat Olfactory System
… applied to study effects of neonatal, unilateral olfactory denervation on postnatal olfactory bulb growth. The in vivo imaging data were used to quantify the reduction in laminar volumes of the denervated bulb, compared to contralateral control bulb, unoperated normal rat bulbs and with …
-
Imaging räumlicher und zeitlicher Dynamik der Geruchstoffrepräsentation im Bulbus Olfactorius der Säugetiere mit einem neuen spannungsabhängigen Farbstoff
… are well described in the mammalian olfactory bulb. Their temporal dynamics have so far only been ex-amined in non-mammalian vertebrates and insects. Complex temporal response patterns have been described on a single cell level or with low spatial resolution using …
-
The Ultrastructure of the Olfactory System in Two Species of Short-Tailed Shrews, <i>Blarina brevicauda</i> and <i>Blarina carolinensis</i>
<p>Several studies of the fine structure of the olfactory system of rodents have been conducted, but very little research has been done on members of the Insectivora. The olfactory systems of the northern short-tailed shrew, <em>Blarina brevicauda</em>, and the southern short-tailed shrew, …
Page 1 of 4