Neuroscience Worksheet: Place Cells, Sleep, and Alzheimer's

Front

What are place cells?

Back

Place cells are neurons in the hippocampus that become active when an animal is in a specific location in its environment, helping to form a cognitive map.

Front

What role does sleep play in memory consolidation?

Back

Sleep is crucial for memory consolidation, as it helps to stabilize and integrate new memories, making them more accessible for later retrieval.

Front

What is Alzheimer's disease?

Back

Alzheimer's disease is a progressive neurodegenerative disorder characterized by memory loss, cognitive decline, and behavioral changes, often associated with the accumulation of amyloid plaques and tau tangles in the brain.

Front

What are neurofibrillary tangles?

Back

Neurofibrillary tangles are aggregates of hyperphosphorylated tau protein that disrupt neuronal function and are commonly found in Alzheimer's disease.

Front

What is the significance of A-Beta in Alzheimer's disease?

Back

A-Beta (amyloid-beta) is a peptide that accumulates to form plaques in the brains of Alzheimer's patients, contributing to neurodegeneration.

Front

What is tau protein and its role in neurodegenerative diseases?

Back

Tau is a protein that stabilizes microtubules in neurons; when it becomes hyperphosphorylated, it can form tangles that disrupt neuronal function, as seen in Alzheimer's.

Front

What is the genetic basis of Huntington's disease?

Back

Huntington's disease is caused by a genetic mutation that leads to polyglutamine expansion in the huntingtin protein, resulting in neurodegeneration.

Front

What is TDP-43 and its relevance in ALS?

Back

TDP-43 is a protein that, when misfolded and aggregated, is commonly found in the motor neurons of patients with amyotrophic lateral sclerosis (ALS).

Front

How does dopamine loss affect movement in Parkinson's disease?

Back

Loss of dopamine in Parkinson's disease leads to increased inhibition of motor pathways, making it difficult to initiate movement.

Front

What is the difference between NFTs and PHFs?

Back

Neurofibrillary tangles (NFTs) are composed of paired helical filaments (PHFs), which are made up of misfolded tau protein.