0000000000124679

AUTHOR

Roberta Perri

showing 2 related works from this author

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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Remembering what but not where: independence of spatial and visual working memory in the human brain

2001

We report the neuropsychological and MRI investigation of a patient (MV) who developed a selective impairment of visual-spatial working memory (WM) with preservation not only of verbal, but also of visual shape WM, following an ischemic lesion in the cerebral territory supplied by one of the terminal branches of the right anterior cerebral artery. MV was defective in visual-spatial WM whether the experimental procedure involved arm movement for target pointing or not. Also, in agreement with the role generally assigned to visual-spatial WM in visual imagery. MV was extremely slow in the mental rotation of visually and verbally presented objects. In striking contrast with the WM deficit, MV'…

Malegenetic structuresCognitive NeuroscienceShort-term memoryExperimental and Cognitive PsychologyNeuropsychological TestsSpatial memoryMagnetic Resonance Imaging; Frontal Lobe; Imagination; Humans; Brain; Space Perception; Middle Aged; Neuropsychological Tests; Parietal Lobe; Memory Disorders; Visual Perception; MaleImagery; Visuo-spatial memory; Working memory; Brain; Frontal Lobe; Humans; Imagination; Magnetic Resonance Imaging; Male; Memory Disorders; Middle Aged; Neuropsychological Tests; Parietal Lobe; Space Perception; Visual PerceptionVisual memoryParietal LobeHumansImageryVisual short-term memoryMemory DisordersSettore M-PSI/02 - Psicobiologia E Psicologia FisiologicaWorking memoryLong-term memoryWorking memoryParietal lobeBrainVisuo-spatial memoryMiddle AgedMagnetic Resonance Imagingeye diseasesNeuroanatomy of memoryFrontal LobeNeuropsychology and Physiological PsychologySpace PerceptionImaginationVisual PerceptionSettore MED/26 - NeurologiaPsychologyNeuroscience
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