Search results for "Topographical disorientation"

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Loss of spatial learning in a patient with topographical disorientation in new environments

2003

The case is described of a patient who, following cerebral hypoxia, developed severe difficulty in orienting himself in new environments in the context of a mild global amnesic syndrome. Some episodes he related suggested that his main difficulty was remembering the spatial/directional value of landmarks he recognised. A neuroradiological examination documented severe bilateral atrophy of the hippocampi associated with atrophic changes in the cerebral hemispheres, most marked in the dorsal regions. Neuropsychological and experimental evaluation showed a severe deficit of spatial learning with substantially preserved ability to learn verbal and visual-object information. He was also virtuall…

Magnetic Resonance Imaging; Maze Learning; Orientation; Amnesia Anterograde; Heroin; Hippocampus; Humans; Hypoxia Brain; Confusion; Narcotics; Parietal Lobe; Memory Disorders; Frontal Lobe; Temporal Lobe; Street Drugs; Adult; Neuropsychological Tests; MaleMaleNeuropsychological TestsHippocampusParietal LobeHypoxia BrainConfusionHypoxiamedicine.diagnostic_testNeuropsychologyBrainStreet DrugNeuropsychological testMagnetic Resonance ImagingTemporal LobeFrontal LobePsychiatry and Mental healthNarcoticNeuropsychological TestSettore MED/26 - Neurologiamedicine.symptomPsychologyHumanMemory DisorderCognitive psychologyPaperAdultNarcoticsStreet DrugsAmnesiaHippocampuAnterogradeOrientationmedicineHumansMemory disorderMaze LearningSensory cueSpatial analysisMemory DisordersSettore M-PSI/02 - Psicobiologia E Psicologia FisiologicaIllicit DrugsTopographical disorientationmedicine.diseaseAmnesia AnterogradeHeroinAdult; Amnesia Anterograde; Confusion; Frontal Lobe; Heroin; Hippocampus; Humans; Hypoxia Brain; Magnetic Resonance Imaging; Male; Maze Learning; Memory Disorders; Narcotics; Neuropsychological Tests; Orientation; Parietal Lobe; Street Drugs; Temporal LobeSpatial learningSurgeryNeurology (clinical)AmnesiaNeuroscience
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Fractionation of memory in medial temporal lobe amnesia

2006

We report a comprehensive investigation of the anterograde memory functions of two patients with memory impairments (RH and JC). RH had neuroradiological evidence of apparently selective right-sided hippocampal damage and an intact cognitive profile apart from selective memory impairments. JC, had neuroradiological evidence of bilateral hippocampal damage following anoxia due to cardiac arrest. He had anomic and "executive" difficulties in addition to a global amnesia, suggesting atrophy extending beyond hippocampal regions. Their performance is compared with that of a previously reported hippocampal amnesic patient who showed preserved recollection and familiarity for faces in the context …

MaleAnterograde amnesiarecollectionCognitive NeuroscienceAmnesiaExperimental and Cognitive Psychologyamnesia; memory; topographical disorientation; recollection; familiarity; hippocampusNeuropsychological TestsHippocampusTemporal lobeBehavioral Neurosciencetopographical disorientationCognitionVisual memoryMemorymedicineHumansMemory disorderHypoxia BrainEpisodic memoryAgedRecognition memoryIntelligence TestsfamiliaritySettore M-PSI/02 - Psicobiologia E Psicologia FisiologicaAssociation LearningRetrograde amnesiaRecognition PsychologyMiddle Agedmedicine.diseaseMagnetic Resonance ImagingTemporal LobeAmnesia Memory Topographical disorientation Recollection Familiarity HippocampusStrokeMental RecallVentricular FibrillationVisual PerceptionFemaleAmnesiamedicine.symptomPsychologyNeurosciencePsychomotor PerformanceNeuropsychologia
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