Retrieval-memories are of little use if they cannot be read Storage-the actual deposition of the memories into theįinal resting places–this is though to be in association This is presumably theĭomain of the association cortices and perhaps other areas. The different sensory systems and translated into whateverįorm necessary to be remembered. Encoding-information for each memory is assembled from Surrounding areas apparently accomplish this. Consolidation-converting the encoded information into aįorm that can be permanently stored. Advanced stage of long-term(permanent engrams) Recall or access to storage: very rapid (recall notĪffected by brain injury (like name, write, and read) Entry into storage: very frequent practice Retroactive inhibition: If the new information Proactive inhibition : If the old information repels the Formation of new engrams requires protein Engrams remain for long time up to several years increase in release sites of chemical transmitters increase in number of presynaptic terminals Lasting memory traces) formed by structural Made by formation of memory engrams (long. Stimulation of the reward orĢ.Repeated practice or rehearsal of the experience. – Information stored according to its significanceĮntry into storage: 1. Membrane → ↑ sensitivity to chemical transmitters Changes in physical properties of postsynaptic Resulting from facilitation of new synapses → creation of Is a newly developed pathway or signal transmission Made by formation of temporary memory traces Entry into storage: verbalization (describing the – Miller’s magical number: 7☒ chunks of information Fading (spontaneous and gradual decline in the amount Presynaptic terminal →↑ Ca content in presynaptic Posttetanic potentiation: multiple stimuli at Synaptic sensitization if sensory experience coupled Stimulation of reverberating circuits → repeated Entry into storage: automatic during perception.Duration: very short (about 0.5 seconds).There are four different types of memory: To store 1 bit, 10 neurons are required For learning a language about 40- 50 millions bits should be Average rate of flow of information is 20 bits/sec during reading 40 bits/sec, during mental calculation 12īits/ sec, and during counting 3 bits /sec All sensory systems send information to brain at 50 bit/sec A bit is the simplest form of sensory experience i.e. So, informations entering brain are either Ī.Selected and stored (1%) → most importantī.Other (99%) → are neglected and forgotten It is limited (total capacity of brain is 3x 108 It is the ability of the brain to store information and recall it
0 Comments
Leave a Reply. |