Tempo

What it is

Tempo is a duration-reproduction challenge in the Senso collection of perceptual precision games. A full-screen pad lights up for a target interval, then goes dark. Your job is to press and hold the pad for exactly the same length of time, releasing to lock in your answer. No numbers, no countdown — just you and your sense of how long things last.

The game runs for five rounds. Target durations range from 0.6 to 3.0 seconds, sampled in log space so short and long intervals are represented equally, which keeps every round feeling genuinely different.

Because humans judge time in ratios rather than absolute milliseconds, your score is calculated the same way. A small proportional miss on a 4-second interval is no worse than the same proportional miss on a 0.8-second one. The playing field stays level across the full range of durations.

How to play

Each round begins the moment the pad lights up. Watch the glow carefully — it may be brief or surprisingly long. When it disappears, the pad is waiting for your response. Press and hold it for as long as you believe the flash lasted, then release. Your reproduction is locked in on release, not on press.

Try not to count silently — Tempo is designed to tap into felt duration, not arithmetic. Rushing to release early inflates your score just as much as overshooting. Stay relaxed: tension and arousal are known to distort time perception, making intervals feel longer than they are.

After each round you will see how close your hold time was to the target, along with a per-round score. Five rounds complete a game, with a maximum total of 50 points. The summary screen shows your consistency across rounds, so you can track whether your internal clock is drifting in a particular direction.

The science

Humans have no dedicated time organ. Unlike vision or touch, interval timing in the seconds range is thought to emerge from neural dynamics spread across several brain systems rather than a single receptor. The most influential model is the pacemaker-accumulator framework, sometimes called Scalar Expectancy Theory (SET). In this model, a central pacemaker emits pulses that a cognitive accumulator counts while attention is directed to the interval. When the interval ends, the count is stored in working memory as the reference duration.

The defining feature of Scalar Expectancy Theory is the scalar property: the standard deviation of time estimates grows in proportion to the interval being timed. If your error on a one-second interval is, say, 10%, your error on a four-second interval will also be around 10% — not a fixed number of milliseconds. This is a temporal form of Weber's law, the same principle that governs loudness discrimination, weight comparison, and many other perceptual judgments. It is why Tempo scores your response using a log-ratio metric rather than a raw millisecond difference: a half-score error corresponds to the same proportional deviation regardless of how long the target was.

Working memory plays a critical role in the reproduction task. Once the flash disappears, you must hold its duration as an active representation while you produce the matching interval. Any distraction that occupies working memory — a stray thought, a background sound — can shorten or lengthen that stored trace. Attention also matters in the opposite direction: when you pay close attention to an empty interval it tends to feel longer, because more clock pulses are accumulated. The familiar experience of a watched pot that never boils is a real psychophysical effect, not a figure of speech.

Neuroscience research points to a network of regions involved in interval timing. The basal ganglia appear central to the pacemaker-accumulator mechanism and are implicated in timing in the range Tempo uses. The cerebellum contributes more to automatic, sub-second timing and motor synchronisation. The supplementary motor area is consistently activated during time reproduction tasks, linking time perception to the motor preparation required to produce a response. Training your interval timing, as Tempo encourages, likely strengthens the precision of these circuits over repeated practice.

Scoring explained

Each round is scored from 0 to 10. The error is computed as the absolute log2 ratio of your hold time to the target duration — that is, |log2(your seconds / target seconds)|. This measure is symmetric and scale-invariant: being twice as long or half as short produces the same error of 1.0. A ratio error of 0.16 (roughly a 12% proportional miss) earns exactly 5 out of 10.

Five rounds give a maximum of 50 points per game. Because the metric is proportional, you are judged on relative accuracy rather than absolute milliseconds, and both very short and very long targets are equally fair. Consistent performance across all five rounds — even if no single round is perfect — will outscore a game where one round is a bullseye and others drift wide.

Tips to improve

• Breathe evenly before each round. Physical tension raises arousal and tends to make intervals feel subjectively longer, pulling your hold time over the target.
• Resist counting. Verbal counting recruits a different cognitive channel than felt duration and tends to fragment your sense of time rather than sharpen it.
• Stay focused on the pad during the flash. Dividing attention away from the stimulus reduces the number of pulses accumulated and causes underestimation.
• Use a consistent release motion. Mechanical hesitation at the end of your hold adds variable latency; a clean, decisive lift keeps your responses precise.
• Review the round summary for systematic bias. If you consistently overshoot or undershoot, shift your mental anchor slightly before the next game rather than trying to correct mid-round.
• Play a short warm-up game before pushing for high scores. Your internal clock needs a few trials to calibrate to the current task context.

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