Short-term Synaptic Plasticity

4/10/01


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Table of Contents

Short-term Synaptic Plasticity

Forms of Plasticity Distinguished By:

Forms of Plasticity Distinguished By:

Forms of Plasticity Distinguished By:

Sites and types of presynaptic Modifications

Sites and types of Postsynaptic Modifications

Short-Term Presynaptic Plasticity (Regehr and Stevens, Chap. 3, Synapses)

Variable amplitude synaptic currents during spike trains

Reproducibility of responses

Key Questions

Consider the steps for modulation

Alterations in presynaptic axons

Changes in calcium entry during spike trains

Predictable changes in calcium influx patterns differ amongst synapses

Paired-Pulse Facilitation (PPF)

Presynaptic Calcium

Evidence that Cares may act at a higher affinity site than Caloc

Paired Pulse Depression (PPD)

More Cares speeds recovery from PPD

How multiple forms of plasticity interact to control synaptic strength during spike trains.

How multiple forms of plasticity interact to control synaptic strength during spike trains.

FD Model of Ca2+ dep. Short-Term Plasticity

Spike train responses are dependent on whether Facilitation or CDR are present

EPSCss during steady state relative to the First EPSC1

Short term Posttetanic Effects

Short term Posttetanic Effects

Short term Post tetanic Effects- Presynaptic

Short term Postsynaptic effects

Short term Postsynaptic effects

Short term Postsynaptic effects

Author: Kristen Harris