Related Experiment Video
Updated: Jun 27, 2026
08:52
Novel Object Recognition Test for the Investigation of Learning and Memory in Mice
Published on: August 30, 2017
73.4K
Subchronic exposure to ambient PM 2.5 impairs novelty recognition and spatial memory
Biorxiv : the Preprint Server for Biology
|September 25, 2023
Summary
Exposure to fine particulate matter (PM2.5) impairs cognitive functions in mice. This study shows that PM2.5 exposure negatively impacts recognition memory and spatial memory, highlighting air pollution
Area of Science:
- Environmental Health
- Neuroscience
- Toxicology
Background:
- Air pollution, particularly fine particulate matter (PM2.5), poses significant public health risks.
- While effects on cardiovascular and pulmonary systems are known, emerging evidence links air pollution to cognitive decline and neurodegenerative diseases.
- Mouse models offer a way to establish causality between PM2.5 exposure and neurological impacts.
Conclusions:
- Subchronic exposure to elevated levels of PM2.5 causes significant impairments in novelty recognition and spatial memory in mice.
- These findings demonstrate a direct causal link between fine particulate air pollution and cognitive deficits.
- The study underscores the neurotoxic potential of PM2.5 and its implications for public health regarding cognitive function.
More Related Videos
Related Concept Videos
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...
01:14Role of Cerebellum and Prefrontal Cortex in Memory
The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the cerebellum's...
01:16Interference and Decay
Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
01:28Microbial Bioremediation of Pesticides
Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...
01:23Chronic Obstructive Pulmonary Disease II: Emphysema
Emphysema, a major phenotype of chronic obstructive pulmonary disease (COPD), is characterized by irreversible destruction of alveolar walls and permanent enlargement of distal airspaces. Unlike chronic bronchitis, which primarily affects the airways, emphysema predominantly involves the lung parenchyma, where structural damage leads to airflow limitation.PathophysiologyIt most commonly results from prolonged exposure to cigarette smoke and other toxic gases, particularly cigarette smoke.