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Unveiling Hidden Neural Codes: SIMPL – A Scalable and Fast Approach for Optimizing Latent Variables and Tuning Curves in Neural Population Data

Dr. Rishabh Pathak
This research paper presents SIMPL (Scalable Iterative Maximization of Population-coded Latents), a novel, computationally efficient algorithm designed to refine the estimation of latent variables and tuning curves from neural population activity. Latent variables in neural data represent essential low-dimensional quantities encoding behavioral or cognitive states, which neuroscientists seek to identify to understand brain computations better. Background and Motivation Traditional approaches commonly assume the observed behavioral variable as the latent neural code. However, this assumption can lead to inaccuracies because neural activity sometimes encodes internal cognitive states differing subtly from observable behavior (e.g., anticipation, mental simulation). Existing latent variable models face challenges such as high computational cost, poor scalability to large datasets, limited expressiveness of tuning models, or difficulties interpreting complex neural network-based functio...
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Planning a Qualitative Analysis

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Dr. Rishabh Pathak

Planning a qualitative analysis in biomechanics involves a systematic approach to understanding and interpreting human movement patterns, behaviors, and interactions without numerical measurements. Here are key steps and considerations for planning a qualitative analysis in biomechanics:


1.    Research Question Formulation:

o    Clearly define the research question or objective of the qualitative analysis. Identify the specific aspect of human movement or biomechanical phenomenon to be explored qualitatively.

2.    Data Collection Methods:

o    Select appropriate data collection methods for capturing qualitative information, such as video recordings, observational notes, interviews, or focus groups.

o   Consider using qualitative tools like field notes, interviews, or open-ended questionnaires to gather rich, descriptive data about human movement.

3.    Participant Selection:

o   Determine the criteria for participant selection, including age, gender, skill level, or specific characteristics relevant to the research question.

o    Ensure informed consent and ethical considerations are addressed when recruiting participants for qualitative analysis.

4.    Observation and Data Recording:

o    Conduct systematic observations of human movement behaviors, interactions, or performance in real-world or controlled settings.

o    Use video recordings, field notes, or audio recordings to document qualitative data and capture relevant details for analysis.

5.    Data Analysis Techniques:

o    Employ qualitative analysis techniques such as thematic analysis, content analysis, or narrative analysis to identify patterns, themes, and insights from the collected data.

o    Organize and code qualitative data to extract meaningful information related to the research question or objectives.

6.    Interpretation and Findings:

o    Interpret the qualitative data to generate insights, explanations, or hypotheses about human movement patterns, strategies, or behaviors.

o    Present findings in a coherent and structured manner, using quotes, examples, or visual aids to support the qualitative analysis.

7.    Validity and Reliability:

o  Ensure the validity and reliability of qualitative analysis by employing rigorous methods for data collection, analysis, and interpretation.

o    Consider triangulation of data sources, peer debriefing, or member checking to enhance the credibility and trustworthiness of qualitative findings.

8.    Reporting and Communication:

o    Prepare a detailed report or presentation of the qualitative analysis findings, including a description of the research process, data collection methods, analysis techniques, and key insights.

o    Communicate the qualitative findings effectively to stakeholders, researchers, or practitioners in the field of biomechanics.

By following these steps and considerations, researchers can effectively plan and conduct a qualitative analysis in biomechanics to gain valuable insights into human movement patterns, behaviors, and interactions that may not be captured through quantitative measurements alone.

 

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