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Researcher reviewing wearable actigraphy devices and study materials in a sleep laboratory.

The Post-Actiwatch Research Landscape: How Sleep Laboratories Can Future-Proof Actigraphy Data Collection

Sleep laboratories depend on consistent data collection to maintain reliable research protocols, especially when studies span months or years. When

a light exposure data visualization

The Hidden Variable in Sleep Studies: Why Light Exposure Belongs in the Actigraphy Dataset

Movement tells you when a participant slept. It does not tell you why the timing sat where it did, and

Research participant wearing a wrist actigraphy device

What Happens When a Research-Grade Actigraph Becomes Part of a Multimodal Sleep Study?

Sleep research increasingly depends on understanding what happens across ordinary days and nights rather than relying exclusively on isolated laboratory

two replacement monitoring devices

After Philips Actiwatch: What Sleep Research Teams Should Look for in a Replacement Actigraph

Philips ended sales of the Actiwatch line after December 2022, and support has wound down in the years since. Searching

a wrist device worn overnight

Why Wrist Position Matters When Collecting Free-Living Light and Activity Data

The same participant, the same day, two wrists, two datasets. Wrist actigraphy is often treated as a fixed measurement, but

a wrist-worn actigraphy device.

Actigraphy vs. Sleep Diaries: What Each Measurement Tells Sleep Researchers

Sleep researchers often combine objective and subjective measurements because each captures a different part of the sleep experience. Actigraphy records

several wrist worn monitoring devices

Actigraphy Comparison for Research Teams: Which Specifications Actually Matter?

Most device comparisons are written for buyers. A useful actigraphy comparison is written for study designers, and it asks a

a person wearing a wrist device

Why Actigraphy Data Quality Starts Before the First Participant Wears the Device

By the time the first participant walks out with a device on their wrist, most of the quality of the

two wearable monitoring devices

What Researchers Should Check Before Buying an Actigraph Device for Sleep Research

Procurement decisions made in a hurry tend to resurface halfway through data collection. Choosing an actigraph device for sleep research means

actigraphy_brazil_portugal_map_cover

Uma década de parceria com a ciência do sono em Portugal

Há dez anos, a pesquisadora portuguesa Cátia Reis utiliza os actígrafos da Condor Instruments em pesquisas sobre sono e ritmos