Related Experiment Video
Updated: Jul 20, 2026
11:01
Examining the Characteristics of Episodic Memory using Event-related Potentials in Patients with Alzheimer's Disease
Published on: August 30, 2011
Short-term visual recognition and temporal order memory are both well-preserved in aging
Robert Sekuler1, Chris McLaughlin, Michael J Kahana
1Volen National Center for Complex Systems, Brandeis University, Waltham, MA 02454, USA. sekuler@brandeis.edu
Psychology and Aging
|September 7, 2006
Summary
Short-term memory for recent events is affected by aging. However, visual temporal order memory remains well-preserved in older adults, with errors stemming from similar perceptual and temporal factors in both age groups.
Area of Science:
- Cognitive Neuroscience
- Psychology of Aging
- Human Memory
Background:
- Normal aging often leads to memory decline, particularly for recent events.
- Not all memory functions are equally susceptible to age-related changes.
Purpose of the Study:
- To compare the effects of aging on short-term recognition and temporal order memory.
- To investigate the factors contributing to temporal order memory errors in young and older adults.
Main Methods:
- Young and older adults performed recognition and temporal order memory tasks using visual stimuli (sinusoidal gratings).
- Stimuli were designed to prevent verbal rehearsal.
- Retention intervals of 1 and 4 seconds were used.
Main Results:
- Overall performance and serial position curves were similar between young and older adults.
- Temporal order errors occurred in approximately 25% of trials for both groups.
- Errors were linked to perceptual and temporal similarities between items.
Conclusions:
- Short-term visual temporal order memory is robust against normal aging.
- The underlying causes of temporal order errors are consistent across age groups.
Related Concept Videos
01:30Cognitive Development During Adulthood
Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
01:19Role of Hippocampus in Memory
The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
01:29Alzheimer Disease l: Introduction
Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...
01:26Higher Mental Functions of Brain: Learning and Memory
Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or playing an...
01:22Dementia l: Introduction
Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
01:12Visual Agnosia
Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...