Tag

Heartbeat

All articles tagged with #heartbeat

space15 days ago•14 min saved

A Private Heartbeat on Voyager: The Golden Record’s Hidden Love Letter

NASA’s Voyager Golden Record carries a minute-long compressed recording of Ann Druyan’s brainwaves and heartbeat from 1977, recorded just after she and Carl Sagan agreed to marry. The clip, intended as a life-sign, sits alongside music, greetings and diagrams as a public time capsule, but it also preserves a private emotional moment that science cannot fully decode. As Voyager travels beyond 25 billion kilometres from Earth, the minute remains a human touch embedded in a machine, a reminder that our messages carry both data and intimate feeling into the cosmos.

via Space Daily|

#ann-druyan #brainwaves #golden-record

neuroscience2 years ago•3 min saved

The Synchronized Dance: How Heartbeats Impact Brain Activity

New research has found that the phases of a heartbeat have a significant impact on brain and motor system excitability. The study used transcranial magnetic stimulation (TMS) to observe changes in cortical and corticospinal excitability across the cardiac cycle and found heightened excitability during the systolic phase. This discovery could potentially revolutionize treatments for depression and stroke by aligning them with the cardiac cycle for enhanced effectiveness.

via Neuroscience News|

#brain-activity #depression #heartbeat

neuroscience2 years ago•3 min saved

Timing is Everything: Unveiling the Optimal Moments for Action and Perception

A study published in PLOS Biology reveals that the timing of our heartbeat influences the brain's responsiveness and perception. Researchers found that during the contracting phase of the heart, both the brain's direct responses and muscle activities were more pronounced. The study suggests that the brain's responsiveness to stimuli fluctuates with the heartbeat, indicating a potential synchronization between cardiac activity and motor functions. The findings highlight the interconnectedness of physiological processes and brain functions, with implications for treatments involving brain stimulation. Understanding the optimal timing in the cardiac cycle could enhance the effectiveness of interventions for conditions like depression and stroke recovery.

via PsyPost|

#brain-activity #cardiac-cycle #heartbeat

science2 years ago•5 min saved

"Harvard Uncovers the Secrets of Heartbeat Initiation"

Harvard researchers have discovered that heart cells in developing zebrafish begin to beat suddenly and simultaneously as calcium levels and electrical signals rise. Each heart cell can beat independently without needing a pacemaker, and the heartbeat initiation can occur at various locations within the heart. The study provides insights into the fundamental mechanisms underlying the heartbeat and may help understand cardiac irregularities in humans.

via SciTechDaily|

#calcium-levels #electrical-signals #heart-cells

health3 years ago•2 min saved

Heightened Heartbeat Awareness in the Blind

Blind people have a better ability to sense their own heartbeat than sighted people, according to a new study. Researchers found that blind individuals scored an average accuracy of 0.78, while the sighted individuals registered 0.63 on average. This suggests that brain plasticity following blindness leads to superior ability in sensing signals from the heart, which has implications for the study of bodily awareness and emotional processing in blind individuals. The study also points to the versatility of the brain in general.

via ScienceAlert|

#blindness #emotional-processing #health

neuroscience3 years ago•3 min saved

Heartbeat Sensing: A Unique Ability of the Blind.

Blind individuals have a heightened ability to sense their own heartbeat compared to sighted individuals, according to a study by researchers at Karolinska Institutet in Sweden and Jagiellonian University in Poland. The study suggests that blindness leads to a heightened ability to feel signals from inside the body. The researchers will continue to study how blind individuals perceive their own bodies and examine if structural changes in the visual cortex may explain the increased ability to sense signals from the inside of the body.

via Neuroscience News|

#blindness #brain-plasticity #emotional-processing