0000000000549025

AUTHOR

Dennis Chan

showing 3 related works from this author

Detecting impaired language processing in patients with mild cognitive impairment using around‐the‐ear cEEgrid electrodes

2021

Mild cognitive impairment (MCI) is the term used to identify those individuals with subjective and objective cognitive decline but with preserved activities of daily living and an absence of dementia. Although MCI can impact functioning in different cognitive domains, most notably episodic memory, relatively little is known about the comprehension of language in MCI. In this study, we used around-the-ear electrodes (cEEGrids) to identify impairments during language comprehension in patients with MCI. In a group of 23 patients with MCI and 23 age-matched controls, language comprehension was tested in a two-word phrase paradigm. We examined the oscillatory changes following word onset as a fu…

medicine.medical_specialtyCognitive NeuroscienceWord processingExperimental and Cognitive PsychologyNeuropsychological TestsAudiologyElectroencephalographybehavioral disciplines and activitiesSentence processingDevelopmental NeuroscienceActivities of Daily Livingmental disordersmedicineAnimalsHumansDementiaCognitive DysfunctionHorsesCognitive declineElectrodesEpisodic memoryBiological PsychiatryLanguagemedicine.diagnostic_testEndocrine and Autonomic SystemsGeneral NeuroscienceCognitionmedicine.diseaseSemanticsComprehensionNeuropsychology and Physiological PsychologyNeurologyPsychologyPsychophysiology
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The hippocampus is required for short-term topographical memory in humans.

2007

The hippocampus plays a crucial role within the neural systems for long-term memory, but little if any role in the short-term retention of some types of stimuli. Nonetheless, the hippocampus may be specialized for allocentric topographical processing, which impacts on short-term memory or even perception. To investigate this we developed performance-matched tests of perception (match-to-sample) and short-term memory (2 s delayed-match-to-sample) for the topography and for the nonspatial aspects of visual scenes. Four patients with focal hippocampal damage and one with more extensive damage, including right parahippocampal gyrus, were tested. All five patients showed impaired topographical m…

AdultMaleTime Factorsgenetic structuresCognitive NeuroscienceAmnesiaShort-term memoryHippocampusHippocampal formationNeuropsychological TestsHippocampusArticleDiscrimination PsychologicalSpatial view cellsmedicineHumanshippocampus topographical memoryEpisodic memoryRecognition memoryAgedBrain MappingSettore M-PSI/02 - Psicobiologia E Psicologia FisiologicaLong-term memoryMiddle AgedMagnetic Resonance ImagingMemory Short-TermPattern Recognition VisualBrain InjuriesSpace PerceptionFemalemedicine.symptomPsychologyNeurosciencePhotic Stimulationpsychological phenomena and processesCognitive psychology
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Detecting impaired language processing in MCI patients using around-the-ear cEEgrid electrodes

2021

AbstractMild cognitive impairment (MCI) is the term used to identify those individuals with subjective and objective cognitive decline but with preserved activities of daily living and an absence of dementia. While MCI can impact functioning in different cognitive domains, most notably episodic memory, relatively little is known about the comprehension of language in MCI. In this study we used around-the-ear electrodes (cEEGrids) to identify impairments during language comprehension in MCI patients. In a group of 23 MCI patients and 23 age-matched controls, language comprehension was tested in a two-word phrase paradigm. We examined the oscillatory changes following word onset as a function…

medicine.medical_specialtymedicine.diagnostic_testWord processingCognitionElectroencephalographyAudiologymedicine.diseaseSentence processingComprehensionmedicineDementiaCognitive declinePsychologyEpisodic memory
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