Rapid modulation of sensory processing induced by stimulus conflict

Humans are constantly confronted with environmental stimuli that conflict with task goals and can interfere with successful behavior. Prevailing theories propose the existence of cognitive control mechanisms that can suppress the processing of conflicting input and enhance that of the relevant input. However, the temporal cascade of brain processes invoked in response to conflicting stimuli remains poorly understood. By examining evoked electrical brain responses in a novel, hemifield-specific, visual-flanker task, we demonstrate that task-irrelevant conflicting stimulus input is quickly detected in higher level executive regions while simultaneously inducing rapid, recurrent modulation of sensory processing in the visual cortex. Importantly, however, both of these effects are larger for individuals with greater incongruency-related RT slowing. The combination of neural activation patterns and behavioral interference effects suggest that this initial sensory modulation induced by conflicting stimulus inputs reflects performance-degrading attentional distraction because of their incompatibility rather than any rapid task-enhancing cognitive control mechanisms. The present findings thus provide neural evidence for a model in which attentional distraction is the key initial trigger for the temporal cascade of processes by which the human brain responds to conflicting stimulus input in the environment

Garnishment - State vs. Federal Procedures

Garnishment, a field once limited only by state or local regulation, has recently undergone a series of much-needed but somewhat questionable changes. These changes are not limited to one state alone, but encompass the entire nation. On July 1, 1970, when Title III of the Consumer Credit Protection Act became effective, this field of law came under the coverage of federal restrictions. In attempting to bring the existing Ohio statutes on garnishment into line with the federal restrictions, the Ohio Legislature passed a series of amendments which became effective on September 16, 1970

COTTON LAND TENURE EVALUATION SOFTWARE USERS' GUIDE

The Federal Agriculture Improvement and Reform Act of 1996 (FAIR Act) introduces several significant changes to farm commodity legislation. While these changes impact all program commodities, they have prompted considerable concern for the future of the Texas cotton industry. Changes in the farm program have prompted many landowners and tenants to evaluate their current rental arrangements and determine if changes are required. In response to considerable ensuing questions regarding the land rental market, a Lotus 1-2-3 template was developed to aid parties in determining an equitable lease. This Lotus template allows users to specify enterprise budget information for rice farm operations and then evaluates the expected returns to producers and landowners under various lease scenarios. The landowners' results are compared with the returns from 100% of the market transition payments and user-specified net returns for an alternative enterprise to calculate the net advantage to landowners for producing rice under the budgeted scenario over the life of the FAIR Act. The Cotton Land Tenure Evaluation Users' Guide is a detailed explanation of how to use the Lotus Cotton Land Tenure Evaluation program. This guide instructs users on how to use the various components of the program. Sections of the Users' Guide include a preface, installation instructions, an overview of the changes in the farm program, a section describing how to input data, a description of the custom menu system, and a report section that illustrates examples of the reports that are available for printing.Agricultural and Food Policy,

RICE LAND TENURE EVALUATION SOFTWARE USERS' GUIDE

The Federal Agriculture Improvement and Reform Act of 1996 (FAIR Act) introduces several significant changes to farm commodity legislation. While these changes impact all program commodities, they have prompted considerable concern for the future of the Texas rice industry. Changes in the farm program have prompted many landowners and tenants to evaluate their current rental arrangements and determine if changes are required. In response to considerable ensuing questions regarding the land rental market, a Lotus 1-2-3 template was developed to aid parties in determining an equitable lease. This Lotus template allows users to specify enterprise budget information for rice farm operations and then evaluates the expected returns to producers and landowners under various lease scenarios. The landowners' results are compared with the returns from 100% of the market transition payments and user-specified net returns for an alternative enterprise to calculate the net advantage to landowners for producing rice under the budgeted scenario over the life of the FAIR Act. The Rice Land Tenure Evaluation Users' Guide is a detailed explanation of how to use the Lotus Rice Land Tenure Evaluation program. This guide instructs users on how to use the various components of the program. Sections of the Users' Guide include a preface, installation instructions, an overview of the changes in the farm program, a section describing how to input data, a description of the custom menu system, and a report section that illustrates examples of the reports that are available for printing.Agricultural and Food Policy,

GRAIN LAND TENURE EVALUATION SOFTWARE USERS' GUIDE

The Federal Agriculture Improvement and Reform Act of 1996 (FAIR Act) introduces several significant changes to farm commodity legislation. While these changes impact all program commodities, they have prompted considerable concern for the future of the Texas grain industry. Changes in the farm program have prompted many landowners and tenants to evaluate their current rental arrangements and determine if changes are required. In response to considerable ensuing questions regarding the land rental market, a Lotus 1-2-3 template was developed to aid parties in determining an equitable lease. This Lotus template allows users to specify enterprise budget information for grain farm operations and then evaluates the expected returns to producers and landowners under various lease scenarios. The landowners' results are compared with the returns from 100% of the market transition payments and user-specified net returns for an alternative enterprise to calculate the net advantage to landowners for producing grain under the budgeted scenario over the life of the FAIR Act. The Grain Land Tenure Evaluation Users' Guide is a detailed explanation of how to use the Lotus Grain Land Tenure Evaluation program. This guide instructs users on how to use the various components of the program. Sections of the Users' Guide include a preface, installation instructions, an overview of the changes in the farm program, a section describing how to input data, a description of the custom menu system, and a report section that illustrates examples of the reports that are available for printing. The Grain Land Tenure Evaluation also has the capability of evaluating all seven program crops. A section in the Users' Guide explains how to switch from one crop to another.Agricultural and Food Policy,

Economic Impacts of Farm Program Payment Limits

The high levels of government payments to farmers resulting from the 1985 farm bill have once again led the Congress to examine the payment limit issue. Payment limits were initially established in 1970 and have since been revised several times. In this report, policy and farm management economists analyze the consequences of alternative payment limits on economic efficiency, economic viability of family-size farms, international competitiveness, and consumer food costs. Effective payment limits encourage reduced farm size and in the presence of economies of size, tend to increase production costs for program crops. The Agricultural and Food Policy Center is charged with evaluating economic impacts of policy alternatives -- not recommending, advocating, or opposing particular policies. The Center's orientation is toward Texas agriculture -- evaluating policy impacts on its producers and consumers. Farm prices and income, however, are determined in world markets that are influenced by national economic policy and farm programs. Texas impacts, therefore, must be evaluated in a much broader national and international market and policy context.Agricultural and Food Policy,

Gravitational Lensing Signature of Long Cosmic Strings

The gravitational lensing by long, wiggly cosmic strings is shown to produce a large number of lensed images of a background source. In addition to pairs of images on either side of the string, a number of small images outline the string due to small-scale structure on the string. This image pattern could provide a highly distinctive signature of cosmic strings. Since the optical depth for multiple imaging of distant quasar sources by long strings may be comparable to that by galaxies, these image patterns should be clearly observable in the next generation of redshift surveys such as the Sloan Digital Sky Survey.Comment: 4 pages, revtex with 3 postscript figures include