Psychology Commons^™

Repeated Intracarotid Amobarbital Tests, T. Loddenkemper, H. H. Morris, Tara T. Lineweaver, C. Kellinghaus

Scholarship and Professional Work - LAS

Rationale:Our goal was to determine the frequency of repeated intracarotid amobarbital test (IAT) at our center and to estimate the retest reliability of the IAT for both language and memory lateralization.

Methods: A total of 1,249 consecutive IATs on 1,190 patients were retrospectively reviewed for repeat tests.

Results: In 4% of patients the IAT was repeated in order to deliver satisfactory information on either language or memory lateralization. Reasons for repetition included obtundation and inability to test for memory lateralization, inability to test for language lateralization, no hemiparesis during first test, no aphasia during first test, atypical vessel filling, …

Cognitive Implications Of Facilitating Echoic Persistence, Carryl L. Baldwin

Psychology Faculty Publications

Seventeen participants performed a tone-pattern-matching task at different presentation levels while concurrently engaged in a simulated-driving task. Presentation levels of 60, 65, and 70 dBC (SPL) were combined factorially with tone-matching delays of 2, 3, and 4 sec. Intensity had no effect on performance in single-task conditions and short-delay conditions. However, when the participants were engaged concurrently in the driving task, a significant interaction between presentation level and delay was observed. In the longest delay condition, the participants performed the tone-patten-matching task more efficiently (more quickly and without additional errors) as presentation intensity increased. These findings demonstrate the interaction between …

Conditional Discrimination And Reversal In Amnesia Subsequent To Hypoxic Brain Injury Or Anterior Communicating Artery Aneurysm Rupture, C. E. Myers, J. Deluca, Ramona O. Hopkins, M. A. Gluck

Faculty Publications

Human anterograde amnesia can develop following bilateral damage to the hippocampus and medial temporal lobes, as in hypoxic brain injury, or following damage to the basal forebrain, as following anterior communicating artery (ACoA) aneurysm rupture. In both cases, the mnestic deficit may be similar when assessed by standard neuropsychological measures. However, animal and computational models suggest that there are qualitative differences in the pattern of impaired and spared memory abilities following damage to hippocampus versus basal forebrain. Here, we show such a dissociation in human amnesia using a single two-stage task, involving conditional discrimination and reversal. Consistent with a prior …