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Long-term Potentiation

Long-term Potentiation

Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.

Long-term Potentiation

Long-term Potentiation

Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
LTP can occur when presynaptic neurons...

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Related Experiment Video

Updated: Jun 20, 2026

A Simple Stimulatory Device for Evoking Point-like Tactile Stimuli: A Searchlight for LFP to Spike Transitions

A Simple Stimulatory Device for Evoking Point-like Tactile Stimuli: A Searchlight for LFP to Spike Transitions

Published on: March 25, 2014

Morphological changes in the middle latency response using maximum length sequence stimuli.

Stephanie Nagle¹, Frank E Musiek

¹University of Connecticut, Department of Communication Disorders, Neuroaudiology Lab, 850 Bolton Road, Unit 1085, Storrs, CT 06269, USA. Stephanie.nagle@Uconn.edu

Journal of the American Academy of Audiology

|September 22, 2009

Summary

This summary is machine-generated.

The maximum length sequence (MLS) paradigm for middle latency response (MLR) testing reveals waveform differences compared to conventional methods. This technique reliably captures late MLR components, offering potential for clinical applications in auditory pathway assessment.

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Area of Science:

Auditory Neuroscience
Neurophysiology
Clinical Audiology

Background:

The middle latency response (MLR) assesses auditory pathway integrity but is limited by slow repetition rates.
Maximum length sequence (MLS) paradigms allow for high-rate MLR recording, potentially reducing test time and revealing rapid stimulation effects.

Purpose of the Study:

Compare MLR waveforms and timing between MLS and conventional paradigms.
Investigate the impact of stimulation rate on MLR morphology within the MLS paradigm.

Main Methods:

A within-subjects repeated measures design was employed.
Ten healthy young adult females with normal hearing participated.
Latency, amplitude, and component presence (Na, Pa, Nb, Pb) of MLR were analyzed.

Main Results:

Significant differences in latency and amplitude were observed between MLS-MLR and conventional MLR paradigms.
Late MLR components (Nb, Pb) were more frequently detected using the MLS paradigm.
Increasing repetition rate in the MLS paradigm led to shorter latencies and lower amplitudes.

Conclusions:

The MLS-MLR paradigm elicits distinct MLR waveforms compared to conventional methods.
The MLS-MLR paradigm reliably evokes late MLR components (Nb, Pb).
This paradigm shows promise as a clinical tool for investigating late MLR components.