The Brain is Never Zero

The Brain is Never Zero

In the realm of thoughts, wonders reside
Brain pulses ceaselessly, a relentless tide
Neurons fire, synapses alight
The brain is never zero, its brilliance ignites.


Partly Cloudy

 https://youtu.be/PfyJQEIsMt0


"Partly Cloudy" is a heartwarming Pixar short film that takes viewers into a whimsical world where clouds are responsible for creating and delivering babies to their expectant families. Directed by Peter Sohn, the story centers around the relationship between Gus, a gloomy gray cloud, and Peck, a small and enthusiastic stork.


Unlike his fellow clouds, Gus specializes in producing challenging and unconventional babies like porcupines, crocodiles, and electric eels. Each morning, Peck tirelessly retrieves the bundles of joy created by Gus, braving their sharp quills and fierce jaws. Despite the dangers, Peck maintains his unwavering dedication to his friend, never faltering in his commitment.

"Partly Cloudy" showcases the power of friendship, forgiveness, and the beauty of embracing one's uniqueness. With stunning animation, heartfelt moments, and a touch of humor, this Pixar short reminds us that even the most unlikely pairs can find solace, love, and happiness in each other's company.

Severe Weather Nashville - Summer Edition

 Summer runs from Jun 21 to Sep 23. This is a running tab of the weather here. 

June is bringing hot temperatures and also lots sudden showers

Jun 29 - Excessive Heat warning all week with temp climbing to 101 on Thu

The entire southern US hit by a massive heatwave. 

I also read that across the world the nighttime temperature is increasing faster than the daytime temperature. Which means there is less chance to cool down before the day heat hits again.

Thu started off hot - headed into the heatwave and ended up with severe thunderstorm alerts instead. A heavy downpour in the afternoon.  

Jun 25 - severe storm risk

Sat Jun 3: Sweltering weekends. Today's High 93

Sun Jun 4: Possible Pop Up Storm

Creativity is the Gift that Keeps on Giving

- Hari Srinivasan

"Every creation is a reflection of the creator's unique perspective."

Hari Srinivasan

 Creativity is the heart and soul of innovation.

- Hari Srinivasan

Task Load Index



The NASA-TLX (Task Load Index) questionnaire is a tool developed by NASA to assess the workload and subjective workload experienced by individuals performing a task. Though initially designed for pilots, it is widely used across various industries including autism research 

The questionnaire has 6 subscales/submeasures, that assess different dimensions of workload. 
  • Mental Demand: mental effort and cognitive load required to perform the task.
  • Physical Demand: physical effort and exertion involved in performing the task.
  • Temporal Demand: perceived time pressure and the amount of time available to complete the task.
  • Performance: individual's perception of their own performance during the task.
  • Effort: perceived level of effort and energy expenditure required to complete the task.
  • Frustration: degree of annoyance, stress, and dissatisfaction experienced during the task.
Scoring and Interpretation
Participants rate each submeasure on a scale of 0 to 100. Scoring and interpretation vary depending on the specific study or context. Generally, higher scores indicate a higher perceived workload in the respective submeasure. 

Researchers often analyze the individual submeasure scores and the overall workload score to gain insights into the specific dimensions of workload that are most significant in a given task or situation. The questionnaire can help identify areas where workload can be optimized or where additional support or resources may be required.

Examples of use in Autism Research in evaluating workload and cognitive demands 

Study: "Task load and verbal responses to questions in children with autism spectrum disorder"Citation: Nishida, T., Yuhi, T., Kaneoke, Y., Kurosawa, K., & Dan, I. (2014). Task load and verbal responses to questions in children with autism spectrum disorder. Frontiers in Human Neuroscience, 8, 937.
Link: https://doi.org/10.3389/fnhum.2014.00937

Study: "Measurement of cognitive workload in individuals with high-functioning autism spectrum disorder using a virtual reality task"Citation: Park, S. M., Chong, S. C., Lim, S. L., Kim, J. S., & Kim, J. S. (2020). Measurement of cognitive workload in individuals with high-functioning autism spectrum disorder using a virtual reality task. Applied Sciences, 10(2), 581.
Link: https://doi.org/10.3390/app10020581





 Creativity is the antidote to monotony.

- Hari Srinivasan

Simultaneity Window

[Concepts in Sensorimotor Research]

Simultaneity Window (SW) refers to a temporal window within which the brain perceives stimuli from different sensory modalities as occurring simultaneously. It represents the temporal range over which the brain integrates sensory inputs from different modalities into a coherent percept.

If stimuli from different modalities fall within the SW, they are likely to be perceptually integrated, whereas if they fall outside the SW, they may be perceived as separate events.

Commonly used research tasks to measure SW
  • Temporal Order Judgment (TOJ): participants are presented with 2 stimuli, one in each sensory modality (e.g., a flash of light and a beep), and they have to determine the order in which the stimuli occurred.
  • Simultaneity Judgment (SJ): Participants are presented with 2 stimuli, from different modalities, and they have to judge whether the stimuli were perceived as simultaneous or not.
  • Temporal Alignment Task: Participants are presented with a stimulus in one modality and have to adjust the timing of a stimulus in the other modality until it is perceived as synchronous with the first stimulus. This helps in determining the temporal window of integration.
  • Temporal Recalibration Task: Participants are exposed to a consistent asynchrony between stimuli from different modalities over a period of time. Following this exposure, their perception of simultaneity is tested to see if it has been recalibrated.
The perception of simultaneity can vary across individuals and is influenced by various factors such as attention, age, disability, the specific sensory modalities involved, and distance of stimuli (as determined by, say the PPS).

 To create is to be fully human.

- Hari Srinivasan

 Creativity is the art of making something out of nothing.

- Hari Srinivasan

EEG Capping

 

EEG capping from a neuroimaging researcher perspective at the Vanderbilt EEG research lab 
(rather than as a half sedated patient in a hospital clinic).

Felt like a soggy swim cap. Not the most comfortable feeling but tolerable.

To clarify, in this photo I'm trying on the cap to see what it feels like as I will likely be using neuroimaging methods (EEG, fMRI etc) in my own research design and I will be studying issues in autism.

 Creativity is the energy that drives progress.

- Hari Srinivasan