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Full-Text Articles in Psychology
Lesions Of The Perirhinal Cortex But Not Of The Frontal, Medial Prefrontal, Visual, Or Insular Cortex Block Fear-Potentiated Startle Using A Visual Conditioned Stimulus, Jeffrey B. Rosen, Janice M. Hitchcock, Mindy Miserendino, William A. Falls, Serge Campeau, Michael Davis
Lesions Of The Perirhinal Cortex But Not Of The Frontal, Medial Prefrontal, Visual, Or Insular Cortex Block Fear-Potentiated Startle Using A Visual Conditioned Stimulus, Jeffrey B. Rosen, Janice M. Hitchcock, Mindy Miserendino, William A. Falls, Serge Campeau, Michael Davis
Psychology Faculty Publications
The present study is part of an ongoing series of experiments aimed at delineation of the neural pathways that mediate fear-potentiated startle, a model of conditioned fear in which the acoustic startle reflex is enhanced when elicited in the presence of a light previously paired with shock. A number of cortical areas that might be involved in relaying information about the visual conditioned stimulus (the light) in fear-potentiated startle were investigated. One hundred thirty-five rats were given 10 light-shock pairings on each of 2 consecutive days, and l-2 d later electrolytic or aspiration lesions in various cortical areas were performed. …
Perception/Action: An Holistic Approach, John M. Flach
Perception/Action: An Holistic Approach, John M. Flach
Psychology Faculty Publications
A general systems approach is taken to studying the emergent properties of the human perception/action system. Two task domains, the control of locomotion and the recognition of objects, are used to study human performance. The locomotion task involves the control of altitude. Experiments are described that will manipulate the type of texture, the speed of forward motion, and altitude. A general hypothesis is presented that performance in the altitude control task is a function of the signal-to-noise ratio within the flow field--where signal refers to optical activity resulting from change of altitude and noise refers to optical activity resulting from …
Extinction Of Fear-Potentiated Startle: Blockade By Infusion Of An Nmda Antagonist Into The Amygdala, Michael Davis, William A. Falls, Mindy Miserendino
Extinction Of Fear-Potentiated Startle: Blockade By Infusion Of An Nmda Antagonist Into The Amygdala, Michael Davis, William A. Falls, Mindy Miserendino
Psychology Faculty Publications
Data derived from in vitro preparations indicate that NMDA receptors play a critical role in synaptic plasticity in the CNS. More recently, in vivo pharmacological manipulations have suggested that an NMDA-dependent process may be involved in specific forms of behavioral plasticity. All of the work thus far has focused on the possible role of NMDA receptors in the acquisition of responses. However, there are many examples in the behavioral literature of learning-induced changes that involve the reduction or elimination of a previously acquired response. Experimental extinction is a primary example of the elimination of a learned response. Experimental extinction is …
The Energetic Costs Of Rough And Tumble Play In The Juvenile Rat, Stephen M. Siviy, Dale M. Atrens
The Energetic Costs Of Rough And Tumble Play In The Juvenile Rat, Stephen M. Siviy, Dale M. Atrens
Psychology Faculty Publications
The metabolic costs of rough-and-tumble play behavior were studied in juvenile rats. Using indirect calorimetry, it was determined that energy expenditure during play is increased by 66-104% over the resting metabolic rate, indicating that play accounts for between 2% and 3% of the total daily energy budget of the rat. In a subsequent experiment, food intake and body weight were monitored for three weeks in rats allowed to play for one hour per day and in rats not allowed to play. While the body weights of the two groups did not differ significantly from each other, those rats allowed to …
Validity Of Discrepancy Criteria For Identifying Children With Developmental Language Disorders, Robin D. Morris, Dorothy M. Aram, Nancy E. Hall
Validity Of Discrepancy Criteria For Identifying Children With Developmental Language Disorders, Robin D. Morris, Dorothy M. Aram, Nancy E. Hall
Psychology Faculty Publications
Empirical data from two studies address the clinical validity of discrepancy criteria for identification of children with developmental language disorders (DLD). Study 1 involved 256 preschoolers clinically defined as DLD and meeting inclusionary criteria for normal hearing, intellectual, neurological, and psychiatric status. Application of alternative psychometrically derived discrepancy criteria identified only 40% to 60% of the clinically defined group as language disordered. Study 2 applied nonverbal IQ-language performance discrepancy criteria to 368 eight-year-old, randomly selected control subjects, resulting in over 45% of the controls being identified as DLD. Factors contributing to underidentification in Study 1 and overidentification in Study 2 …
Psychology, David E. Leary
Psychology, David E. Leary
Psychology Faculty Publications
Although the discipline of psychology, in its contemporary form, is only a century old, psychology's historical antecedents reach back to the beginnings of civilization. Whether defined as the study of the soul or the study of human faculties, as it was in earlier times, or as the study of consciousness, mind, or behavior, as it has been over the past hundred years, psychology has dealt with some of the fundamental questions and issues pertaining to the functions, processes, and mechanisms of human and animal nature.