Related Experiment Video
Updated: Jun 24, 2026
13:00
Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
Published on: January 23, 2017
Auditory working memory load impairs visual ventral stream processing: toward a unified model of attentional load
Jane Klemen1, Christian Büchel, Mira Bühler
1University Medical Centre Hamburg Eppendorf, Hamburg, Germany. klemenj@cardiff.ac.uk
Journal of Cognitive Neuroscience
|March 24, 2009
Summary
High cognitive load reduces the processing of irrelevant visual stimuli, supporting a generalized load theory. This finding enhances understanding of attentional interference and cognitive control mechanisms.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Human Performance
Background:
- Attentional interference impacts parallel task performance.
- Mechanisms of interference are not fully understood.
- Understanding attention is crucial for human performance and disruptions.
Purpose of the Study:
- Investigate the effect of cognitive load on processing task-irrelevant stimuli.
- Test the generalized load theory of cognitive control.
- Examine fMRI activation in response to visual stimuli under varying working memory loads.
Main Methods:
- Concurrent presentation of an auditory n-back working memory task (low/high load) and visual stimuli.
- Manipulation of visual stimulus visibility (0%, 50%, 100%).
- Measurement of fMRI activation in the lateral occipital cortex.
Main Results:
- High working memory load significantly reduced fMRI activation in the lateral occipital cortex compared to low load.
- This reduction indicates decreased processing of task-irrelevant visual stimuli under high cognitive demand.
- Results align with a uniform effect of increased load, regardless of load type.
Conclusions:
- Cognitive load uniformly reduces the processing of irrelevant stimuli.
- Findings support a generalized load theory, extending beyond task-specific demands.
- This research clarifies attentional interference and cognitive control processes.
Related Concept Videos
01:24Working Memory
Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this information.
01:17Auditory Perception
The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the cochlea, a...
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"...
01:15Auditory Pathway
Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
01:22Chunking and Rehearsal in Sensory Memory
Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of information more...