Hippocampus and Memory Functions

The video explains the hippocampus's structure and function, focusing on its role in memory formation. It covers the tri-synaptic circuit, detailing the pathways and connections within the hippocampus. The hippocampus acts as an index for memory retrieval, interacting with various brain regions to consolidate and recall memories.

Which lobe of the brain contains the hippocampus?

• Frontal lobe

• Occipital lobe

• Temporal lobe

• Parietal lobe

What is the shape of the hippocampus often compared to?

• A starfish

• A seahorse

• A dolphin

• A snake

Which type of memory is associated with facts and events?

• Sensory memory

• Procedural memory

• Implicit memory

• Episodic memory

Which brain structure supports non-declarative memory?

• Basal ganglia

• Hippocampus

• Amygdala

• Cerebellum

What is the first pathway in the tri-synaptic circuit?

• Mossy fiber pathway

• Schaefer collateral pathway

• Fornix pathway

• Perforant pathway

What is the role of the CA3 pyramidal neurons in the tri-synaptic circuit?

• Connect to the subiculum

• Project to the dentate gyrus

• Transmit signals to the CA1 neurons

• Receive input from the entorhinal cortex

Which pathway connects CA3 neurons to CA1 neurons?

• Fornix pathway

• Mossy fiber pathway

• Perforant pathway

• Schaefer collateral pathway

What is the major output region for the hippocampus?

• Entorhinal cortex

• Subiculum

• Dentate gyrus

• CA1 region

How does the hippocampus function as an index for memory?

• By storing all memories

• By retrieving and reactivating distributed memory parts

• By erasing old memories

• By creating new memories

What enhances the speed of memory recall in the hippocampus?

• Faster neuron firing rate

• Higher number of neurons

• Stronger connections between neurons

• Increased neuron size