AI:which nerves nerves tissues hormones are involved in this whole process anc how this yaad stores past present future events

 

To give you a useful and focused answer, I need a bit of clarification:
By "this whole process," are you referring to memory and how the brain stores past, present, and future events?
And by "yaad," are you referring to memory (as "yaad" means memory in Hindi/Urdu)?
If yes, I’ll explain how the nervous system, tissues, and hormones work together to store memories of the past, relate to the present, and imagine the future.
Understanding Memory (Yaad) and Time (Past–Present–Future)
1. Nervous System Involved
The nervous system has central and peripheral parts. For memory:
Brain (Central Nervous System) is key.
Hippocampus: Critical for forming new memories.
Prefrontal cortex: Involved in decision-making, working memory, future planning.
Amygdala: Emotional memory.
Cerebellum: Procedural memory (e.g., riding a bike).
2. Nerve Tissues Involved
Nerve tissue consists of:
Neurons: These are the main cells that send electrical signals.
Glial cells: Support and protect neurons.
In memory:
Neurons form synapses (connections).
When you remember something, certain patterns of neurons fire together.
More often they're used → stronger the connection (called "Hebbian learning": “neurons that fire together, wire together”).
3. Hormones Involved in Memory
Hormones influence how well you form or recall memories, especially emotional ones.
Hormone Function in Memory
Cortisol Stress hormone – can enhance or impair memory depending on the level and context.
Adrenaline Boosts memory formation during emotional events (e.g., trauma, excitement).
Dopamine Reward/motivation – involved in memory related to pleasure or learning.
Acetylcholine Crucial for learning and memory – low in Alzheimer's disease.
Oxytocin Enhances memory related to social and emotional bonding.
How Memory Stores Past, Present, Future
1. Past (Episodic Memory)
Stored mainly in the hippocampus and neocortex.
These are your "mental time-travel" moments: remembering a birthday, an accident, a conversation.
Consolidation: After you experience something, your brain replays and consolidates it during sleep.
2. Present (Working Memory)
Managed by the prefrontal cortex.
It’s like the RAM of your brain.
Holds information temporarily while you're thinking (e.g., doing math in your head, remembering a phone number).
3. Future (Prospective Memory & Imagination)
The same brain areas (hippocampus, prefrontal cortex) are used to imagine the future as to remember the past.
Called "constructive memory" – your brain uses pieces of old experiences to simulate future scenarios.
Summary
Aspect Key Components
Nerves Neurons in hippocampus, cortex, amygdala
Nerve Tissue Neurons & synapses form memory circuits
Hormones Cortisol, adrenaline, dopamine, acetylcholine, oxytocin
Past Memory Episodic memory – stored in hippocampus & cortex
Present Working memory – prefrontal cortex
Future Constructed using old memories – hippocampus + imagination
If you're asking in a spiritual, philosophical, or cultural context (like "where is yaad stored beyond the brain?"), I can expand that direction too — just let me know.