Lifetime Periods
Lifetime Periods - Related Videos
09:45
Fluorescence Lifetime Imaging of Molecular Rotors in Living Cells
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Cited by 17 •
2012
Fluorescence Lifetime Imaging (FLIM) has emerged as a key technique to image the environment and interaction of specific proteins and dyes in living cells. FLIM of fluorescent molecular rotors allows mapping of viscosity in living cells.
03:26
Analyzing Amyloid Structures in a Tissue Section Using Fluorescence Lifetime Imaging Microscopy
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2025
Source: Nyström, S., et al., Imaging Amyloid Tissues Stained with Luminescent Conjugated Oligothiophenes by Hyperspectral Confocal Microscopy and Fluorescence Lifetime Imaging. J. Vis. Exp. (2017).This video demonstrates analyzing amyloid structures with fluorescence lifetime imaging microscopy or FLIM, using hFTAA dye to reveal compact cores as blue/green and unstable peripheries as red/yellow in color-coded images, reflecting amyloid organization.
01:24
Customer Lifetime Value
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2024
Customer Lifetime Value (CLV) is a metric that quantifies the total revenue a business expects to earn from a customer throughout their entire relationship. It involves predicting the monetary value a customer will bring over time, factoring in their purchasing patterns, frequency, and duration of engagement. CLV is crucial for businesses to assess the long-term profitability of acquiring and retaining customers. By understanding the value each customer contributes, companies can optimize...
05:36
Fluorescence Lifetime Imaging of PolyQ Protein Aggregation in Caenorhabditis elegans Neurons
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2025
Source: Pigazzini, M. L., et. al. Characterization of Amyloid Structures in Aging C. Elegans Using Fluorescence Lifetime Imaging. J. Vis. Exp. (2020).This video demonstrates the use of fluorescence lifetime imaging microscopy (FLIM) to assess polyQ protein aggregation in C. elegans neurons, comparing control and chaperone protein-deficient worms. Increased aggregation in chaperone-deficient worms promotes energy transfer between clustered fluorophores, reducing fluorescence lifetime.
04:00
Periodic Classification of the Elements
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2020
The periodic table arranges atoms based on increasing atomic number so that elements with the same chemical properties recur periodically. When their electron configurations are added to the table, a periodic recurrence of similar electron configurations in the outer shells of these elements is observed. Because they are in the outer shells of an atom, valence electrons play the most important role in chemical reactions. The outer electrons have the highest energy of the electrons in an atom...
FAQs
Developmental transitions occur gradually, and individuals do not move through them in identical ways. Treating periods as flexible helps psychologists account for variation in timing, rather than assuming that every person reaches psychological changes at the same age. This approach supports more accurate interpretation of biological maturation, cognitive growth, emotional regulation, and social development across the lifespan.
Psychological change reflects the interaction of several domains rather than a single developmental process. Biological maturation can coincide with changes in cognition, emotional regulation, and relationships, while cultural context influences how those changes are expressed. Examining these factors together allows researchers to study development as an integrated pattern instead of isolating one characteristic from the person’s broader environment.
Comparing periods can reveal developmental patterns, age-related strengths, and times when people may experience increased vulnerability. The value of comparison lies in identifying differences and continuities across the lifespan, not in ranking one period as universally better than another. These comparisons can also clarify how psychological change relates to maturation, relationships, and cultural context.
Psychologists use developmental timing to select assessments that fit the person’s period of life and current psychological context. Because transitions vary among individuals, assessment should consider more than chronological placement alone. This framework helps practitioners interpret cognitive, emotional, social, and biological information in a developmentally informed way, supporting more suitable evaluation and intervention planning.
The framework guides work across several applied areas. In education, it supports age-appropriate understanding of development; in mental health, it informs assessment and intervention planning. Family studies can examine relationships across changing periods, while aging research can focus on later-life development. Across these settings, the framework connects psychological change with practical decisions about support and care.
Lifetime periods provide an organized way to examine continuity and change from infancy through older age without limiting psychology to childhood or a single transition. Researchers can use the framework to connect biological maturation, cognition, emotion, relationships, and culture across the lifespan. This broad perspective supports theories that treat development as an ongoing process with changing strengths and vulnerabilities.