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Zusammenfassung Lernen auf molekularer Ebene - Langzeitpotenzierung

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Lernen auf molekularer Ebene erklärt anhand der Langzeitpotenzierung in einer NMDA-Synapse mit eigener Abbildung und Text

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Written for

Institution
Secondary school
Study
Gymnasium
Course
School year
1

Document information

Uploaded on
January 30, 2023
Number of pages
2
Written in
2020/2021
Type
Summary

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GRUNDLAGEN
Veränderung von Synapse
• schnellere Weiterleitung von Reize
• Speicherung von Informatione

Mechanismen
1. erhöhte Transmitterkonzentration in der Präsynaps
2. höhere Anzahl von Rezeptoren/ Ionenkanäle in der Postsynaps
3. schnellere Wiederaufnahme von Transmittern in der Präsynaps
4. Bildung neuer Synapsen

LANGZEIT POTENZIERUNG
in einer NMDA-Synaps
Transmitter: Glutamat


NMDA-Synapse bei normaler Erregun
• AMPA-Rezeptoren durch Glutamat geöffne
• NMDA-Rezeptoren blockiert
• Natrium-Ionen strömen in die Postsynapse
• Depolarisation

zertor

Of
wat wat

NMDA-Synapse bei erhöhter
Erregun

l • Öffnung der NMDA-Rezeptoren durch
Glutama
• Eintreten von Calcium-Ione




Fünf
• LTP: frühe Phase und späte Phase



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