Short-term cognitive practice effects in Parkinson's disease: More than meets the eye.

Introduction: Although practice effects (PE) on repeated cognitive testing have received growing interest in Alzheimer's disease, they have been understudied in Parkinson's disease (PD). The current paper examined PE across one week in a sample of patients with PD via traditional methods and regression-based change scores, as well as if these change scores relate to clinical variables in PD.

Methods: Thirty-five patients with PD were administered a brief cognitive battery twice across approximately one week.

Biomarker and neuropsychological correlates of the N400 event-related potential in Alzheimer's disease.

Objective: The current study sought to characterize the relationship of the N400 (N4) effect event-related potential to Alzheimer's disease (AD) biomarkers and broader cognition in older adults on the late-life cognitive continuum.

Method: Participants who were cognitively intact (n = 43), or had amnestic mild cognitive impairment (MCI; n = 19), or mild AD (n = 12), completed a word-pair judgement task during concurrent EEG recording to elicit the N400. The Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) and biomarker data (PET-imaged beta-amyloid (aβ) deposition, apolipoprotein-E ε4 (APOE4) allele status, hippocampal volumes) were collected as part of a larger study.

Associations between the resting EEG aperiodic slope and broad domains of cognitive ability.

Recent studies suggest that the EEG aperiodic exponent (often represented as a slope in log-log space) is sensitive to individual differences in momentary cognitive skills such as selective attention and information processing speed. However, findings are mixed, and most of the studies have focused on just a narrow range of cognitive domains. This study used an archival dataset to help clarify associations between resting aperiodic features and broad domains of cognitive ability, which vary in their demands on momentary processing.

Recognition subtests of the Repeatable Battery for the Assessment of Neuropsychological Status: evidence for a cortical vs. subcortical distinction.

Introduction: Within clinical neuropsychology, a classic diagnostic distinction is made between cortical and subcortical disorders, especially based on their memory profiles. Typically, this is based on the comparison of recall and recognition trials, where individuals with cortical conditions do not tend to benefit (i.e.

The cognitive profile of essential tremor on the Repeatable Battery for the Assessment of Neuropsychological Status.

Essential tremor (ET), while defined by progressive motor symptoms, is increasingly associated with cognitive impairments (e.g. attention, memory, and executive functions).

Cognitive Complaints in Motor Functional Neurological (Conversion) Disorders: A Focused Review and Clinical Perspective.

Functional neurological (conversion) disorder (FND) is a neuropsychiatric condition characterized by sensorimotor symptoms exhibiting features incompatible with other neurologic diseases. Individuals with motor FND (mFND) typically present with limb weakness, nonepileptic seizures, and/or abnormal movements. However, this population also frequently reports clouded thinking, inattention, and memory difficulties.