Transcranial Stimulation for Selective Memory Recall

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Solution Overview

Problem

Current methods for memory recall, such as auditory or olfactory cues, are impractical for operational use during waking periods and cannot selectively enhance specific memories, as they are lost in complex environments and limited in discriminability, and drugs cannot selectively enhance particular memories.

Innovation Solution

A system that associates a unique stimulation pattern with a memory during a waking experience, using transcranial stimulation to cue recall during wakefulness by applying the same pattern, which includes a processor-controlled brain stimulation system with electrodes, capable of delivering specific stimulation patterns based on event descriptors and environmental features.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If auditory or olfactory cues are used to prompt memory recall, then memory retrieval can be triggered, but the cues are lost in complex ambient environments and have limited discriminability

Engineering Contradiction:
Improvememory recall reliabilityVSAvoidambient noise and distractions
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces auditory/olfactory cues with transcranial electrical stimulation directly applied to the brain. This substitution eliminates the problem of cues being lost in ambient environments by bypassing sensory channels entirely, delivering stimulation through the scalp that directly affects neural activity without interference from external noise or distractions.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent applies stimulation locally to specific regions of the brain corresponding to the memory being recalled. By targeting specific cortical areas with precise stimulation patterns, the system achieves selective memory activation without affecting other brain regions, thereby improving recall reliability while resisting environmental interference.

Inventive Principle:
Principle #3Local quality

2Productivity

If drugs are used to enhance memory, then memory improvement can be achieved, but drugs cannot selectively enhance particular memories

Engineering Contradiction:
Improvememory retrieval efficiencyVSAvoidmemory selectivity
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The patent delivers transcranial stimulation to specific brain regions corresponding to particular memories, enabling selective enhancement of specific memory traces. This localizes the effect to the exact cortical areas encoding the target memory, allowing precise control over which memories are enhanced without the non-selective action of pharmacological drugs.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent segments the brain into distinct functional regions and applies different stimulation patterns to different regions corresponding to different memories. This segmentation allows the system to independently enhance specific memories while leaving others unaffected, achieving the precision that pharmacological approaches cannot provide.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If simple descriptors are used to describe memories, then reminders can be created, but they cannot capture the complex feeling of complex tasks

Engineering Contradiction:
Improvereminder simplicityVSAvoidcomplex memory details
Core Design Contradiction:
Ease of operationVSLoss of information

Solution Approach 1:

The patent replaces textual or auditory descriptors with direct transcranial stimulation that reactivates the neural patterns associated with complex memories. This substitution allows the system to capture and convey the full complexity of procedural memories and emotional feelings without relying on simplified linguistic descriptors that cannot adequately represent complex experiences.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent creates a direct neural copy of the original memory state by applying stimulation patterns that replicate the brain's activity during the original learning experience. This copying approach preserves the complete complexity of the memory, including procedural details and emotional components, without the information loss inherent in textual descriptions.

Inventive Principle:
Principle #26Copying

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables effective recall of specific memories during waking periods, even in complex environments, by applying a unique stimulation pattern that is resistant to ambient noise and distractions, allowing for precise memory recall when needed, improving memory retrieval efficiency and accuracy.

Implementation Method 1

applying the same stimulation pattern... via a brain stimulation system... with electrodes

Methodology Applied
Scientific EffectTranscranial stimulation: Conduction (electrical)

Data Source

PatentUS11278722B2System and method to cue specific memory recalls while awake
Publication Date: 2022.03.22 HRL LAB
  • US11278722B2 patent drawing
  • US11278722B2 patent drawing
  • US11278722B2 patent drawing

AI summary

Described is a system for cueing a specific memory in a waking state. The system sends an initiation signal to a memory recall controller to select a stored stimulation pattern previously associated with a specific memory of an event. The system signals to a memory recall controller to initiate delivery of the selected stimulation pattern to a brain in a waking state for a duration of the event via a brain stimulation system. Following completion of the event, the system signals for the memory recall controller to stop the brain stimulation system from delivering the selected stimulation pattern.