Social and Behavioral Sciences Commons^™

Task-Switching In Oculomotor Control: Systematic Investigations Of The Unidirectional Prosaccade Switch-Cost, Jeffrey Weiler

Electronic Thesis and Dissertation Repository

An antisaccade requires suppressing a stimulus-driven prosaccade (i.e., response suppression) and remapping a target’s spatial location to its mirror-symmetrical position (i.e., vector inversion). Notably, my previous work demonstrated that the successful execution of an antisaccade selectively lengthens the reaction time (RT) of a subsequently completed prosaccade (i.e., the unidirectional prosaccade switch-cost; Weiler & Heath, 2012a; Weiler & Heath, 2012b). Thus, the objective of this dissertation was further investigate, and ultimately provide a mechanistic explanation for the unidirectional prosaccade switch-cost.

In Chapter Two, I demonstrate that the magnitude of the unidirectional prosaccade switch-cost is not dependent of the number of …

The Interaction Between Spatial Working And Reference Memory In Rats On A Radial Maze, Nicole Ann Guitar

Undergraduate Honors Theses

The present study investigated the interaction between working and reference spatial memory in an effort to develop an animal model of this interaction. Twelve male Long-Evans rats were tested on an eight-arm radial maze in a two-phase procedure. In the study phase, a rat was allowed to enter four randomly selected arms for a food reward placed at the end of each arm. The test phase allowed the rat access to all eight arms, but only the previously unentered arms contained food. Two of the correct test arms were defined as reference memory arms because they were always correct. The …