Thesis--Dorpat. / "Literatura": p. [37]-40.

Inaug.-diss.--Würzburg. / Lebenslauf. "Übersetzt aus dem englischen von frl. O. und M. Külpe."--Foot-note, p.[3].

Thesis (M.S.)--University of Wisconsin--Madison, 1972. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.S.)--University of Wisconsin--Madison, 1972. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis--University of Wisconsin--Madison. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (Ph. D.)--Cornell University, 1920. / "Reprinted from the American journal of psychology, April 1920, vol. XXXI."

No description available.

Proefschrift--Utrecht. / Includes bibliographical references (p. 542-573).

Recent evidence indicates that mental imagery comprises independent object and spatial subsystems. The experiments reported here are behavioral studies of these subsystems. Experiments 1 and 2 used the selective interference paradigm to determine whether these subsystems could be behaviorally dissociated. In Experiment 1, subjects listened to descriptions of spatially arrayed objects as they performed an object or spatial interfering task. Recall of the descriptions was expected to demonstrate selective interference of item names or spatial relations as a function of interfering task, however this result was not found. In Experiment 2, subjects indicated whether sentences read in either a spatial or a non-spatial format were true or false. Sentences required either object, spatial, or no imagery. The spatial presentation differentially slowed verification time for high imagery sentences compared to abstract sentences. The prediction that the spatial format would selectively slow verification time for spatial versus object imagery sentences did not obtain for all subjects, however subjects of lower spatial ability showed this pattern of results. Experiments 3-5 isolated one contribution of spatial imagery to memory: Its ability to preserve the sequential order of events. Pictures were presented either in the same location or in different locations. When items in the spatial condition appeared in consecutive locations (Experiment 3), there was no effect on amount recalled, but subjects made fewer sequencing errors. No benefits of the spatial presentation were found with nonconsecutive locations (Experiment 4), presumably because subjects could not remember the order of locations in which the stimuli appeared. When retrieval cues informed subjects of the sequence of locations in which the stimuli had appeared (Experiment 5), subjects were able to use the nonconsecutive locations to aid in sequencing. These studies are interpreted in terms of the anatomical underpinnings of the spatial and object systems. It is argued that connections between these systems make it difficult to separate them through selective interference. Nevertheless, Experiments 3-5 indicate that spatial imagery functions to maintain temporal order information. The two systems therefore appear to serve different and complementary roles in memory. / This thesis was digitized as part of a project begun in 2014 to increase the number of Duke psychology theses available online. The digitization project was spearheaded by Ciara Healy.

The lateral line organ in fish and amphibians transforms fluid motion in the animal's surroundings into a representation of its hydrodynamic environment. This sense is involved in complex behaviors, ranging from rheotaxis to schooling. The primary sensory neurons are hair cells, each of which can tonically transmit a graded ‘analog' signal to afferent neurons, via highly specialized ‘ribbon' synapses. Many questions about this first step in sensory coding remain to be answered. For example: What is the relationship between the biologically relevant stimulus and hair cell output? How do the synaptic properties of different hair cells contribute to the signal that is sent to the brain? And how are these signals modulated by top-down (efferent) projections? The first chapter of this thesis describes a newly established preparation including an overview of transgenic fish lines, some of which were newly generated, to study the processing of mechanical information in larval zebrafish at various stages, from the periphery to the hindbrain. The second chapter contains a detailed characterization of the relationship between cupula deflection and hair-cell glutamate release. We show that the population of hair cells in the lateral line is highly heterogeneous in terms of their sensitivity, dynamic range and adaptive properties and that this heterogeneity has functional implications for downstream processing. These results are unique because of how well the biophysical, anatomical and physiological context of the actual sensory transduction is maintained. The third chapter describes the effects of (fictive) locomotion on the processing of mechanical information. We show that an efferent signal, which is highly correlated with motor neuron activity, is present in the neuromast and leads to a strong suppression of mechanically induced activity of afferent neurons. This efference copy appears to selectively reduce the gain to hair cells sensitive to posterior cupula deflections.