WordNet

of or relating to a musical scale; "he played some basic scalar patterns on his guitar"
a variable quantity that cannot be resolved into components
of or relating to a directionless magnitude (such as mass or speed etc.) that is completely specified by its magnitude; "scalar quantity"
a graphical recording of the cardiac cycle produced by an electrocardiograph (同)cardiogram, EKG, ECG

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A vector-free ECG interpretation with P, QRS & T waves as unbalanced transitions between stable configurations of the heart electric field during P-R, S-T & T-P segments.

Kurbel S1.
Theoretical biology & medical modelling.Theor Biol Med Model.2014 Feb 10;11:10. doi: 10.1186/1742-4682-11-10.
Since cell membranes are weak sources of electrostatic fields, this ECG interpretation relies on the analogy between cells and electrets. It is here assumed that cell-bound electric fields unite, reach the body surface and the surrounding space and form the thoracic electric field that consists from
PMID 24506945

Pasquali D1, Arcopinto M, Renzullo A, Rotondi M, Accardo G, Salzano A, Esposito D, Saldamarco L, Isidori AM, Marra AM, Ruvolo A, Napoli R, Bossone E, Lenzi A, Baliga RR, Saccà L, Cittadini A.
International journal of cardiology.Int J Cardiol.2013 Sep 30;168(2):754-9. doi: 10.1016/j.ijcard.2012.09.215. Epub 2012 Oct 23.
BACKGROUND: Several epidemiological studies have demonstrated an increased mortality from cardiovascular causes in patients with Klinefelter Syndrome (KS). Little information is available about the nature of the underlying cardiovascular abnormalities. Aim of the study was to investigate exercise pe
PMID 23092857

Methods for presenting and visualising electrocardiographic data: From temporal signals to spatial imaging.

Bond RR1, Finlay DD, Nugent CD, Moore G, Guldenring D.
Journal of electrocardiology.J Electrocardiol.2013 May-Jun;46(3):182-96. doi: 10.1016/j.jelectrocard.2013.01.008. Epub 2013 Feb 22.
INTRODUCTION: The electrocardiogram (ECG) is a recording of the electrical activity of the heart. It is commonly used to non-invasively assess the cardiac activity of a patient. Since 1938, ECG data has been visualised as 12 scalar traces (known as the standard 12-lead ECG). Although this is known a
PMID 23462202

松村祐貴,和田俊和
研究報告コンピュータビジョンとイメージメディア（CVIM） 2015-CVIM-195(22), 1-6, 2015-01-15
… The original Gaussian process regression estimates a scalar value as an expected value of output, which can simply be extended to estimate a vector value. … By using the proposed method in anomaly detection of plant data and electrocardiogram data in the experiment, it was confirmed its effectiveness. …
NAID 170000092558

松村祐貴,和田俊和
情報処理学会研究報告. CVIM, [コンピュータビジョンとイメージメディア] 2015-CVIM-195(22), 1-6, 2015-01-15
ガウス過程回帰は出力の期待値と分散を推定する非線形回帰手法である.基本的なガウス過程回帰で推定できる出力の期待値はスカラー値であり,ベクトル値の出力を推定する際にガウス過程回帰を出力次元の回数だけ実行しても各次元間の相関関係は表現できず,共分散も推定できない.我々は,すでにガウス過程回帰の高速化法として,動的 Active Set を用いる方法を提案しており,この Active Set の出力成分 …
NAID 110009882542

Dose-response relation between terfenadine (Seldane) and the QTc interval on the scalar electrocardiogram : distinguishing a drug effect from spontaneous variability