Group items tagged

Since his birth 33 years ago, Jonathan Keleher has been living without a cerebellum, a structure that usually contains about half the brain's neurons. Besides playing a vital role in balance and fine motor control, the cerebellum is also actively involved in higher functions, like using language, reading maps and planning. Emotional complexity is a challenge for Jonathan, says his sister, Sarah Napoline. She says her brother is a great listener, but isn't introspective. "He doesn't really get into this deeper level of conversation that builds strong relationships, things that would be the foundation for a romantic relationship or deep enduring friendships," she says. Jonathan also needed to be taught a lot of things that people with a cerebellum learn automatically, Sarah says: how to speak clearly, how to behave in social situations and how to show emotion. Yet Jonathan is now able to do all of those things. He's done it by training other areas of his brain to do the jobs usually done by the cerebellum.

Using a brain-imaging technique that examines the entire infant brain, University of Washington researchers have found that the anatomy of certain brain areas - the hippocampus and cerebellum - can predict children's language abilities at one year of age. Infants with a greater concentration of gray and white matter in the cerebellum and the hippocampus showed greater language ability at age 1, as measured by babbling, recognition of familiar names and words, and ability to produce different types of sounds. This is the first study to identify a relationship between language and the cerebellum and hippocampus in infants. Neither brain area is well-known for its role in language: the cerebellum is typically linked to motor learning, while the hippocampus is commonly recognized as a memory processor. "Looking at the whole brain produced a surprising result and scientists live for surprises. It wasn't the language areas of the infant brain that predicted their future linguistic skills, but instead brain areas linked to motor abilities and memory processing," Kuhl said. "Infants have to listen and memorize the sound patterns used by the people in their culture, and then coax their own mouths and tongues to make these sounds in order join the social conversation and get a response from their parents." The findings could reflect infants' abilities to master the motor planning for speech and to develop the memory requirements for keeping the sound patterns in mind. "The brain uses many general skills to learn language," Kuhl said. "Knowing which brain regions are linked to this early learning could help identify children with developmental disabilities and provide them with early interventions that will steer them back toward a typical developmental path."

"The researchers can't be sure, but they think the remission of the man's stammer is likely related to his cerebellum damage, which may have had the effect of inhibiting excessive neural activation in that structure."

"...consensus is emerging that FOXP2 probably plays a more fundamental role in the brain. Its presence in the basal ganglia and cerebellums of different animals provides a clue as to what that role might be. Both regions help to produce precise sequences of muscle movements. Not only that, they are also able to integrate information coming in from the senses with motor commands sent from other parts of the brain."

While this article primarily addresses the phenomenon of dysmusia, difficulty in reading music, it also talks about the cognitive underpinnings of music reading. In the brain, reading music is a widespread, multi-modal activity, meaning that many different areas of the brain are involved at the same time. It includes motor, visual, auditory, audiovisual, somatosensory, parietal and frontal areas in both hemispheres and the cerebellum - making music reading truly a whole brain activity. With training, the neural network strengthens. Even reading a single pitch activates this widespread network in musicians. The article also reiterates a pattern that researchers are finding: while text and music reading share some networks, they are largely independent. The pattern of activation for reading musical symbols and letters is different across the brain. Scientists have determined this via studies of patients with limited brain damage, as brain injury impaired reading of one coding system but spared the other.

The brain's language regions work together as a co-ordinated network, with some parts involved in multiple functions and a level of redundancy in some processing pathways. So it's not simply a matter of one brain region doing one thing in isolation. Brain-imaging methods have revealed that much more of our brain is involved in language processing than previously thought. Thanks to fMRI technology, we now know that numerous regions in every major lobe (frontal, parietal, occipital and temporal lobes; and the cerebellum, an area at the bottom of the brain) are involved in our ability to produce and comprehend language.