Differential relations between heart rate and skin conductance, and public speaking anxiety

Abstract. Conference presentations are stressful communication tasks for many speakers. This mental stress inhibits the speaker's ability to recall information and perceive the audience. Moreover, stress deteriorates linguistic and paralinguistic capabilities of the speaker. This paper proposes a wearable talk assistant to monitor mental stress and provide relaxation feedback during public speaking. The assistant senses the speaker's body stress by means of heart activity. With this data the system recognises stressful talk phases. We evaluate the approach in authentic conference talks. The talk assistant was worn by 5 speakers before, during, and after giving a 20 minute talk. Our results demonstrate that it is feasible to distinguish the talk period from the surrounding periods and detect talk phases. These findings show that heart activity provides vital information to estimate the speaker's body stress. Moreover, we outline ways to proactively support a speaker non-disruptively while talking in order to maximise the presentation performance.

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“…Cardiac response was found to clearly differentiate between anticipation, confrontation and release phase in comparison to SCL [14].…”

Section: Related Workmentioning

confidence: 95%

“…Recording of heart rate during public speaking was done by hand [10], paperbased physiograph [4], heart rate monitors attached to the index finger [11], ear-worn device [1], and an ECG system [14].…”

Section: Related Workmentioning

confidence: 99%

Analysis of Heart Stress Response for a Public Talk Assistant System

Kusserow

Amft

Tröster

2008

Lecture Notes in Computer Science

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“…For instance, oral defence of one's master thesis proposal to one's supervisor and peers is stressful for most graduate students (Bachmann et al 1999;Croft et al 2004;Gilkinson 1942). Moreover, anticipation of public speaking causes stress in most individuals (Boucsein and Wendt-Suhl 1981;Kirschbaum et al 1993).…”

Section: Introductionmentioning

confidence: 99%

Ambulatory Assessment of Skin Conductivity During First Thesis Presentation: Lower Self-Confidence Predicts Prolonged Stress Response

Elfering

Grebner

2011

Appl Psychophysiol Biofeedback

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In this field study self-confidence was tested to predict the course of galvanic electrodermal stress response prior, during and after public speaking. Ten graduate students initially rated their self-confidence and afterwards presented their thesis proposals orally in a 10-min presentation to their supervisor and peers. Galvanic skin response level was measured throughout and analysed for 10 min prior to, during, and 10 min after the presentation. Two major galvanic electrodermal stress response types were observed. Five students showed a 'healthy response', i.e. an anticipatory increase in electrodermal conductance, followed by a decrease after termination of the presentation. The other five students showed a steady increase of skin conductance during and after their presentation ('prolonged response'). In line with the allostatic load model the 'prolonged response' group reported significantly lower self-confidence before presentation than the 'healthy response' group (p \ 0.01). Self-confidence is a resource in novices facing an unfamiliar stressor.

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“…Em relação às condições de estresse propostas para a apresentação da fala, predominaram a apresentação para uma platéia com um número variável de pessoas SAWYER, 2001;SAVITSKY;GILOVICH, 2003;GRUENEWAL et al, 2004), a fala gravada por uma vídeo-câmara (HAZLETT-STEVENS; BORKOVEC, 2001;GONZALEZ-BONO et al, 2002;GROSS, 2003) e a avaliação do desempenho por psicólogos ou especialistas (CARRILO et al, 2001;HOFMANN et al, 2005), sendo que a maior parte dos estudos utilizou-se de pelo menos dois destes parâmetros. Já quanto às fases do procedimento, predominou a avaliação de pelo menos três: basal ou pré-stress ou antecipação, execução e pós-stress/recuperação (CARRILO et al, 2003;CROFT et al, 2004;JEZOVA et al, 2004). No que diz respeito às durações destas fases, o tempo foi variável entre nos estudos, de 2,5 a 15 minutos (mediana = 5 minutos) para as fases basal/ pré-stress, de 2,5 a 15 minutos (mediana = 3 minutos) para a fase antecipação, de 0,5 a 15 minutos (mediana = 3 minutos) para a fase execução/ fala e de 0,6 a 5 minutos (mediana = 1 minuto) para a fase pós-stress/recuperação.…”

Section: O Transtorno De Ansiedade Social E O Medo De Falar Em Públicounclassified

“…Quanto às variáveis fisiológicas, predominou o uso de medidas cardiovasculares, a saber: freqüência cardíaca, volume do pulso periférico, pressão arterial e fluxo sanguíneo da face SAWYER, 2001;GONZALEZ-BONO et al, 2002;SCHWERDTFEGER, 2004;VASSEND;KNARDAHL, 2005) e de condutância da pele (CARRILO et al, 2001;CARRILO et al, 2003;CROFT et al, 2004;HOFMANN et al, 2005), estas utilizadas de forma isolada ou combinada. Alguns estudos utilizaram também de medidas neurais TILLFORS et al, 2001; 2005) e medidas hormonais, cujo parâmetro mais utilizado foi o do cortisol salivar (GRUENEWAL et al, 2004;JEZOVA, 2004).…”

Section: O Transtorno De Ansiedade Social E O Medo De Falar Em Públicounclassified

Transtorno de ansiedade social: validação de instrumentos de avaliação

Osório¹,

Loureiro²,

Crippa³

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À Profa. Dra. Marisa Japur, com quem tive a honra de realizar minha iniciação científica, ainda na Graduação em Psicologia, sendo apresentada de forma apaixonante, séria e ética ao mundo da pesquisa científica;Aos colegas da Pós-graduação: Carlos Alberto Baptista, Alaor Santos Filho, Maria Cecília Freitas,Carolina Menezes Gaya, Luciene Vaccaro de Moraes, Kátia Regina Busato, Clarissa Trzesniak, Stella Mesquita, Moisés Chaves, Luiz Márcio Lima, Maria Gabriela

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Differential relations between heart rate and skin conductance, and public speaking anxiety

Cited by 72 publications

References 34 publications

Analysis of Heart Stress Response for a Public Talk Assistant System

Analysis of Heart Stress Response for a Public Talk Assistant System

Ambulatory Assessment of Skin Conductivity During First Thesis Presentation: Lower Self-Confidence Predicts Prolonged Stress Response

Transtorno de ansiedade social: validação de instrumentos de avaliação

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