How the brain controls facial expressions
How the brain controls facial expressions
Jan 8, 2026
Jan 12, 2026
Identifying facial expressions is crucial for social interactions. Functional neuroimaging studies show that a set of brain areas, such as the fusiform gyrus and amygdala, become active when viewing emotional facial expressions. The majority of ...
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Feb 20, 2024
Your brain connects to your body through 12 cranial nerves 🧠 These nerves control smell, vision, eye movement, facial expression, hearing, balance, speech, swallowing, heartbeat and digestion.
May 12, 2025
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When someone smiles at you or shows concern through facial expressions, your temporal lobes help decode those signals so you can respond appropriately. Damage here can lead to changes in personality or difficulty interpreting social signals—a reminder that this brain region impacts far more than just sensory input.
When neurological damage impacts the brain, nerves, and muscles, it can reduce facial expression, eye tracking, and muscle control. In my case, recovery didn't come from one miracle solution. It came from consistent nutrition, strength training, and physical exercise.
Jan 30, 2025
Mar 15, 2024
While control subjects classified these images to the nearest expression, subjects who had damage to the bilateral amygdala had problems with this task, especially with the recognition of facial expressions that show fear.
The brainstem controls essential life functions such as breathing, heartbeat, and communication between the brain and body.
1 day ago
Emotional contagion is the automatic spread of emotions from one person to another through unconscious mimicry and social cues.
It controls voluntary muscle movements throughout the body. This region sends signals via neurons to muscles, directing everything from walking to facial expressions. The motor cortex itself is divided into two parts: Primary Motor Cortex: Directly responsible for initiating voluntary movements.
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This area of the brain controls executive functions such as planning, prioritizing and controlling impulses. Because it develops so late, your teenager may have lapses in judgment.
The paper is titled "The human amygdala parametrically encodes the intensity of specific facial emotions and their categorical ambiguity." Michael Tyszka, associate director of the Caltech Brain Imaging Center, is an additional Caltech coauthor.
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A new study reveals the amygdala has distinct neurons that can judge ambiguity and intensity of facial expressions.
Our laboratory has been engaged in a series of studies exploring the perception and production of facial blends. Using high-speed videography, we began measuring the temporal aspects of facial expressions to develop a more complete understanding of the neurophysiology underlying facial expressions and facial blends.
Dec 23, 2025
In facial expressions, there are significantly stronger differences between species, which are due to the different number of muscle groups in the face and the ability to control them. Already Darwin stated that animals can develop specific facial expressions adapted to their species 73 .
Dec 15, 2025
The present Review deals with the motor control of facial expressions in humans. Facial expressions are a central part of human communication. Emotional face expressions have a crucial role in human nonverbal behavior, allowing a rapid transfer of information between individuals. Facial expressions can be either voluntarily or emotionally ...
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Jun 21, 2025
The amygdala has distinct neurons that judge the intensity and ambiguity of facial expressions, new research shows. Identifying the amygdala's role in social cognition suggests insights into ...
The Neural Control System Two distinct brain regions control different types of facial movement: Motor cortex - Initiates voluntary facial movements like deliberate smiles Limbic system - Triggers spontaneous emotional expressions The anatomy of a smile involves precise timing and coordination between these neural signals.
Scientists identify the brain region responsible for recognizing facial expressions in others. It helps us know whether others are happy or sad.
Jul 24, 2025
The paper is titled "The human amygdala parametrically encodes the intensity of specific facial emotions and their categorical ambiguity." Michael Tyszka, associate director of the Caltech Brain Imaging Center, is an additional Caltech coauthor.
In computational terms, a facial expression can encode information, and we've long wondered how the brain is able to decode this information so efficiently," he explained.
The distributed nature of the decision manifests in the joint activation of multiple motor areas that initiate the production of facial expression. Concomitantly multiple areas, including the amygdala, monitor ongoing overt behaviors (the expression itself) and the covert, autonomic responses that accompany emotional expressions.
Facial expressions reflect decisions about the perceived meaning of social stimuli and the expected socio-emotional outcome of responding (or not) with a reciprocating expression. The decision to produce a facial expression emerges from the joint activity of a network of structures that include the …
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Facial expressions reflect decisions about the perceived meaning of social stimuli and the expected socio-emotional outcome of responding (or not) with a reciprocating expression. The decision to produce a facial expression emerges from the joint activity of a network of structures that include the amygdala and multiple, interconnected cortical and subcortical motor areas. Reciprocal ...
Facial expression is a critical form of nonverbal social communication which promotes emotional exchange and affiliation among humans. Facial expressions are generated via precise contraction of the facial muscles, guided by sensory feedback. While the neural pathways underlying facial motor control …
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