A new study suggests that deep brain stimulation may do more than control movement disorders: it could also help repair social behavior disrupted by pain experienced early in life. In research published in Translational Psychiatry, Wan, Du, Yang and colleagues report that stimulating the brain’s anterior cingulate cortex alleviated social deficits associated with early-life pain. The proposed mechanism is a restoration of the balance between excitatory and inhibitory neural signals, a fundamental process that determines how brain circuits respond, adapt and communicate.

Early-life pain has effects that can extend far beyond the moment of injury or medical treatment. During development, the nervous system is rapidly building connections, refining sensory pathways and establishing the networks that support emotion and social behavior. Excessive or poorly regulated pain signals during this period may alter that process. Instead of remaining confined to pain-processing circuits, these changes can influence stress responses, emotional regulation and the ability to interact with other individuals later in life.

The anterior cingulate cortex, or ACC, is particularly important in this story. Located in the frontal region of the brain, it helps integrate emotional information with attention, motivation and decision-making. It is also involved in processing the unpleasantness of pain and in evaluating social experiences. Because the ACC sits at the intersection of pain, emotion and social behavior, disturbances in its activity could provide a neural explanation for why early-life pain is linked to later difficulties with social interaction.

At the cellular level, the brain depends on a delicate equilibrium between excitation and inhibition. Excitatory neurons generally increase the likelihood that neighboring cells will fire, while inhibitory neurons suppress or constrain that activity. This excitatory/inhibitory, or E/I, balance allows neural circuits to remain flexible without becoming either silent or excessively active. If excitation dominates, networks may become unstable and hypersensitive; if inhibition dominates, communication and behavioral responses may be weakened. The study connects social deficits after early-life pain with disruption of this balance in the ACC.

Deep brain stimulation offers a way to influence such malfunctioning circuits directly. The technique uses electrical pulses delivered through precisely positioned electrodes to modify activity in targeted brain regions. Although DBS is best known clinically for treating Parkinson’s disease, essential tremor and several other neurological conditions, researchers are increasingly investigating whether it can reshape circuits involved in mood, motivation and social behavior. The new findings place the ACC among the brain regions that may be responsive to this approach.

According to the study, stimulation of the ACC improved social abnormalities linked to early-life pain while also normalizing indicators of excitatory and inhibitory signaling. This is important because it suggests that the behavioral improvement was not simply a generalized effect of activating the brain. Instead, the intervention may have acted on a specific circuit-level disturbance. By bringing opposing neural forces back toward equilibrium, DBS could make the ACC more capable of processing social information and generating appropriate responses.

The result also highlights a shift in how scientists understand the consequences of pain during development. Pain is often treated as a temporary sensory event, but developing neural systems can interpret repeated or intense pain as an organizing signal. That signal may alter synaptic strength, neuronal excitability and communication between brain regions. Over time, these changes could become embedded in circuits that regulate social engagement. The study’s emphasis on E/I balance suggests that developmental pain may produce lasting behavioral effects through measurable changes in network physiology rather than through an unexplained psychological process.

The findings are likely to attract attention because social deficits are difficult to treat and can appear across many neurological and psychiatric conditions. However, DBS is an invasive therapy involving neurosurgical implantation, and the study does not mean that the treatment is ready for routine use in people affected by early-life pain. Translating a circuit-level discovery into a safe human therapy requires extensive work, including confirmation in independent models, determination of the most effective stimulation parameters and careful assessment of possible side effects. The ACC is involved in many functions, so altering its activity could influence emotion, attention or pain perception in unwanted ways.

Even with those limitations, the research offers a potentially powerful framework for future therapies. If social difficulties can be linked to a specific imbalance between excitation and inhibition, treatments might eventually be designed to correct that imbalance with greater precision. DBS is only one possibility. Noninvasive stimulation, pharmacological treatments that selectively influence inhibitory or excitatory signaling, and therapies combining behavioral training with neuromodulation could also emerge from the same biological insight.

The study’s central message is that the developing brain may retain a capacity for repair, even after early adverse experiences have changed its circuitry. By targeting the ACC and restoring the neural balance that supports its function, deep brain stimulation improved social behavior in the reported research. The work does not erase the complexity of developmental pain, but it identifies a concrete biological pathway connecting early injury, altered brain networks and later social difficulties. That connection could help move the field closer to treatments that address not only pain itself, but also the long-term social consequences it can leave behind.

Subject of Research: Deep brain stimulation, early-life pain, social deficits, and excitatory/inhibitory balance in the anterior cingulate cortex

Article Title: Deep brain stimulation ameliorates social deficits from early-life pain by restoring excitatory/inhibitory balance in the anterior cingulate cortex

Article References: Wan, X., Du, T., Yang, D. et al. Deep brain stimulation ameliorates social deficits from early-life pain by restoring excitatory/inhibitory balance in the anterior cingulate cortex. Transl Psychiatry (2026). https://doi.org/10.1038/s41398-026-04311-z

Image Credits: AI Generated

DOI: https://doi.org/10.1038/s41398-026-04311-z

Keywords: deep brain stimulation, early-life pain, social deficits, anterior cingulate cortex, excitatory/inhibitory balance, neuroscience, brain stimulation, developmental pain, social behavior

Japan earthquake relief efforts will receive financial support from Apple following the powerful earthquake that struck Kumamoto Prefecture on the island of Kyushu.

CEO Tim Cook announced the donation through social media on July 30. He expressed concern for people facing the earthquake and continuing aftershocks while thanking the first responders helping affected communities.

“Japan has a very special place in my heart.”

Cook wrote before confirming that Apple was making a donation to support relief work.

Apple did not disclose the amount, recipient organizations or whether its contribution would support the immediate emergency response, longer-term reconstruction or both. The company frequently keeps disaster donation amounts private, even when Cook publicly confirms its participation.

The announcement came as rescue teams continued searching damaged homes, industrial facilities and the remains of a shopping center. Survivors were dealing with water shortages, disrupted transportation, damaged buildings and dangerous summer temperatures.

Japan Earthquake Relief Follows Deadly Kumamoto Disaster

The earthquake struck southwestern Japan on Tuesday, July 28. Japanese reporting and international agencies have described it as a magnitude 7.1 event, while the U.S. Geological Survey measured it at magnitude 6.8. Differences can occur because agencies use different measurement methods and datasets.

The earthquake reached the highest level on Japan’s seismic intensity scale in parts of Kumamoto. Strong shaking damaged roads, houses and public infrastructure across communities near the epicenter.

The confirmed death toll had risen to 34 by Friday, according to Kumamoto prefectural authorities. Additional people were injured or remained missing as emergency workers entered the period when the likelihood of finding survivors beneath collapsed structures begins to decline sharply.

One of the most severe incidents involved an explosion and partial collapse at a shopping center. The earthquake also toppled a large chimney at a paper factory, damaged traditional homes and caused another section of the stone walls at Kumamoto Castle to collapse.

The historic castle was undergoing extensive restoration after the 2016 Kumamoto earthquakes. Damage to rebuilt or partially restored areas illustrates how recovery from one major disaster can remain unfinished when another arrives.

Aftershocks continued during the rescue operation, increasing the danger for emergency personnel entering unstable buildings. They also discouraged residents from returning to damaged homes, even when those structures remained standing.

Thousands of survivors moved into public shelters or slept inside vehicles. Some families chose cars because evacuation centers were crowded, while others feared that another strong tremor could collapse weakened buildings.

Extreme heat added another emergency. High summer temperatures can quickly create dehydration, heat exhaustion and medical complications, particularly for older people, children and residents sleeping in vehicles without reliable cooling.

Apple Donation Joins an Expanding Corporate Response

The Apple donation places the company among several technology and entertainment businesses providing money for Japan earthquake relief and reconstruction.

The Pokémon Company announced a contribution of 100 million yen to Kumamoto Prefecture, the Japanese Red Cross and other support organizations. The funding is intended to assist people affected by the earthquake and support restoration across damaged areas.

Sony committed 50 million yen and began collecting additional employee donations that the company will match. Its contribution is being directed toward the Japanese Red Cross and an emergency fund operated with Save the Children.

Sony has a direct industrial connection to Kumamoto through its semiconductor operations. The company described the prefecture as a community with which it has developed deep ties since establishing the Kumamoto Technology Center in 2001.

Apple also maintains substantial commercial and cultural connections with Japan through its retail stores, developer community, suppliers and customers. Cook has visited the country repeatedly and has met Japanese developers, musicians, educators and manufacturing partners during previous trips.

The amount behind Apple’s latest commitment may never be made public. The absence of a disclosed figure prevents direct comparison with other corporate donations, and it also leaves unanswered which organizations will distribute the money.

Relief contributions can support several different stages of a disaster response. Immediate funding may pay for water, food, temporary shelter, medical care and emergency equipment. Later funding can help repair homes, restore community services and assist families whose employment disappeared with damaged businesses.

The timing of Apple’s donation places it during the immediate emergency rather than after the complete scale of destruction has been calculated. Recovery costs will continue changing as inspectors determine which buildings can be repaired and which must be demolished.

Kumamoto Faces Another Long Recovery

Kumamoto experienced a destructive sequence of earthquakes in April 2016. Those events killed dozens of people, damaged or destroyed more than 100,000 buildings and displaced large numbers of residents.

Apple responded at the time by allowing customers to send donations to the Japanese Red Cross through iTunes. The system offered preset contribution amounts that were transferred without Apple retaining a percentage.

The company has used similar responses after earthquakes, hurricanes, floods and wildfires in several countries. Cook usually announces the commitment publicly while leaving the amount and distribution arrangements private.

Apple has previously contributed directly to relief organizations and has sometimes provided matching programs for employee donations. It has not announced whether employee matching or a customer donation channel will accompany the current Japan earthquake relief commitment.

The 2026 disaster presents different immediate pressures from the 2016 earthquakes because it arrived during intense summer heat. Shelter capacity alone does not solve the problem when buildings lack sufficient cooling, water or private areas for medically vulnerable residents.

Japanese authorities deployed Self-Defense Force personnel and emergency teams to support local rescuers. Prime Minister Sanae Takaichi instructed agencies to prioritize the protection of life, collect information quickly and coordinate assistance across national and local government.

Electricity had been restored by Friday evening, according to the local power company, but water remained a serious concern. Kumamoto authorities said nearly 80,000 homes were still without running water, creating demand for bottled supplies, mobile water stations and sanitation support.

A water interruption affects more than drinking. Hospitals, shelters, restaurants and homes need reliable supplies for hygiene, food preparation and medical care. Restoration can take longer than electricity because ruptured pipes must be located, isolated and repaired across damaged roads and neighborhoods.

Apple Donation Arrives Before the Full Damage Is Known

Apple’s announcement communicates support without defining how the money will be used. The effectiveness of the contribution will depend on the recipient, timing and ability to direct funding toward needs that remain after the first wave of public attention passes.

Immediate rescue work receives the greatest visibility, but rebuilding homes and local businesses can continue for years. Families may need temporary housing long after shelters close, while damaged schools, transportation routes and medical facilities require larger reconstruction programs.

Private donations cannot replace government disaster funding. They can provide additional flexibility for relief groups that need to purchase supplies quickly or reach people whose circumstances do not fit standard assistance programs.

The continuing aftershocks also make damage assessments provisional. A building considered stable after the first inspection may require another examination, while rain or additional shaking can affect weakened slopes and structures.

Apple has not indicated whether it will open a public donation channel through the App Store or another service. Its current response is limited to the corporate contribution confirmed by Cook.

The next stage of Japan earthquake relief will move from search operations toward shelter support, structural inspections and temporary housing. In Kumamoto, the most urgent calculation is already measured beyond financial totals: nearly 80,000 homes need running water restored while residents endure the hottest weeks of the Japanese summer.

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