Hippocampus and Memory Functions

The video discusses the hippocampus, its role in memory formation, and its involvement in both short-term and long-term memory. It explains how procedural memories can be formed without the hippocampus and details the process of memory consolidation. The hippocampus is crucial for retrieving long-term memories by integrating sensory information. Theta waves are used to measure hippocampal activity, which is linked to learning and memory. The video also covers causes of hippocampal abnormalities and their effects on memory. It describes the hippocampus' connections with other brain regions and its role in long-term potentiation, highlighting the involvement of CA1 and CA3 cells and Schaffer collaterals.

What is the primary role of the hippocampus in memory?

• Forming short-term and long-term memories

• Storing procedural memories

• Controlling motor functions

• Regulating emotions

Which type of memory can be formed without the hippocampus?

• Working memory

• Procedural memory

• Semantic memory

• Episodic memory

How long does it take for long-term memory to become independent of the hippocampus?

• Three months

• One week

• One month

• Six months

What is the role of theta waves in the hippocampus?

• They are linked to emotional regulation

• They measure activity related to learning and memory

• They control motor functions

• They are involved in sensory processing

Which disease is associated with hippocampal contraction and dilated ventricles?

• Parkinson's disease

• Huntington's disease

• Alzheimer's disease

• Enzyme S disease

What is the main structure involved in long-term potentiation?

• Thalamus

• Hippocampus

• Cerebral cortex

• Cerebellum

Which cells in the hippocampus are connected by Schaffer collateral axons?

• CA1 and CA3 cells

• CA1 and CA2 cells

• CA3 and dentate gyrus cells

• CA2 and CA3 cells

What is the principal output pathway from the hippocampus?

• From dentate gyrus to CA3

• From CA1 to entorhinal cortex

• From entorhinal cortex to CA1

• From CA3 to dentate gyrus

Which fibers connect the dentate gyrus to the CA3 cells?

• Mossy fibers

• Schaffer collateral fibers

• Perforant pathway fibers

• Cingulum fibers

What is the starting point of the perforant pathway?

• CA1 cells

• CA3 cells

• Dentate gyrus

• Entorhinal cortex