A left-hand advantage for self-description: the impact of schizotypal personality traits

Platek, Steven M.; Myers, Thomas E.; Critton, Samuel R.; Gallup, Gordon G.

doi:10.1016/s0920-9964(02)00494-2

Cited by 49 publications

(26 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ownership appeared to prime left-hand responses, but interfere with right-hand responses. While this effect was unanticipated, it is consistent with several previous studies that have found a left-hand advantage for responding to self-related stimuli (e.g., Keenan et al 1999;Keenan et al 2001;Platek et al 2003). Such effects suggests that the effect observed in the present experiment is not a specific effect of body ownership as such, but rather a generic effect of self-related stimuli.…”

Section: Ownership and The Right Hemispheresupporting

confidence: 93%

Sense of Agency Primes Manual Motor Responses

Longo

Haggard

2009

Perception

View full text Add to dashboard Cite

Perceiving the body influences how we perceive and respond to stimuli in the world. We investigated the respective effects of different components of bodily representation -the senses of ownership and agency -on responses to simple visual stimuli. Participants viewed a video image of their hand on a computer monitor presented either in real time, or with a systematic delay. Blocks began with an induction period in which the index finger was (1) brushed, (2) passively moved, or (3) actively moved by the participant. Subjective reports showed that the sense of ownership over the seen hand emerged with synchronous video, regardless of the type of induction, whereas the sense of agency over the hand emerged only following synchronous video with active movement. Following induction, participants responded as quickly as possible to the onset of visual stimuli near the hand by pressing a button with their other hand. Reaction time was significantly speeded when participants had a sense of agency over their seen hand.This effect was eliminated when participants responded vocally, suggesting that it reflects priming of manual responses, rather than enhanced stimulus detection. These results suggest that vision of one's own hand -and, specifically, the sense of agency over that hand -primes manual motor responses. Agency and Motor Facilitation

show abstract

Section: Ownership and The Right Hemispheresupporting

confidence: 93%

Sense of Agency Primes Manual Motor Responses

Longo

Haggard

2009

Perception

View full text Add to dashboard Cite

show abstract

“…Consistent with this observation, self-face recognition is associated with distinct patterns of behavioral performance [4][5][6][7] and neural activation [8][9][10][11] as compared with the recognition of others' faces. Further, numerous studies have reported that patients with schizophrenia [12,13] and normal individuals with schizotypal personality [14][15][16] are impaired in self-face recognition. Because self faces are not only highly familiar [17] but also self-related [18], two related but distinct theories have been proposed.…”

mentioning

confidence: 99%

“…Because self faces are not only highly familiar [17] but also self-related [18], two related but distinct theories have been proposed. One interpretation is that the poor performance reflects deficits in recognizing the familiarity of self faces (i.e., a deficit in the sense of familiarity) [19,20], whereas the other argues that the disrupted behavior arises from the breakdown of self-awareness in schizophrenia (i.e., a deficit in the sense of self) [13,16]. To test these two alternatives, we adopted a paradigm to exclude the effect of general cognitive ability and to decouple self-face recognition into two component processes, the sense of familiarity and the sense of self.…”

mentioning

confidence: 99%

Selective impairment in recognizing the familiarity of self faces in schizophrenia

Zhang

Zhu

et al. 2012

Chin. Sci. Bull.

View full text Add to dashboard Cite

The concept of self is a fundamental characteristic of the human mind, and the alteration of self is thought to be a core deficit of schizophrenia. Previous studies have demonstrated that patients with schizophrenia are deficient in self-face recognition. Because self faces are not only self-related but also highly familiar, it is unclear whether such deficit arises from the breakdown of the self-awareness or the failure of recognizing the familiarity of self faces. Here we directly tested these two alternatives by instructing patients with schizophrenia to recognize the identity of a morphed face created by blending face features between any of two identities from the self face, a familiar face, and a novel face. We found that there was no association between the recognition of the self and the recognition of the familiarity, suggesting these two component processes are independent in schizophrenia. Further, patients with schizophrenia were significantly worse in recognizing the familiarity of faces than normal participants, whereas no difference in the sense of self was found between the two groups. Taken together, our finding suggests that it is the sense of familiarity, not the sense of self, that is selectively impaired in self-face recognition in schizophrenia. Thus, our study challenges the hypothesis that the deficit in self-face recognition in schizophrenia reflects the breakdown of self-awareness. , two related but distinct theories have been proposed. One interpretation is that the poor performance reflects deficits in recognizing the familiarity of self faces (i.e., a deficit in the sense of familiarity) [19,20], whereas the other argues that the disrupted behavior arises from the breakdown of self-awareness in schizophrenia (i.e., a deficit in the sense of self) [13,16]. To test these two alternatives, we adopted a paradigm to exclude the effect of general cognitive ability and to decouple self-face recognition into two component processes, the sense of familiarity and the sense of self. We then directly examined which component process of self-face recognition is disrupted in schizophrenia. Previous studies have shown that the sense of familiarity and the sense of self are processed independently in normal participants [9,11]. First, a left-hand advantage is observed only in recognizing self faces, not familiar faces, suggesting that the processing of self is dominated in the right hemisphere [4][5][6]. Second, functional magnetic resonance imaging studies have revealed that different cortical regions are

show abstract

“…El hecho de que las dimensiones Cognitivo-perceptiva y de Desorganización de la esquizotipia correlacionen significativamente con fallos el reconocimiento de caras confirman también el carácter continuo de este fenómeno, siendo más acusados los fallos en el reconocimiento del self que ocurren en la esquizofrenia que en la esquizotipia (Platek, Myers, Critton, & Gallup, 2003). Si bien la relación entre el reconocimiento de la propia cara y de la cara de otras personas y los factores Cognitivo-perceptivo y de Desorganización fue estudiada por primera ver por Larøi y colaboradores, a nivel teórico, Sass y Parnas (2003) ya habían sugerido que los síntomas Cognitivo-perceptivos y de Desorganización están asociados con anormalidades en la experiencia del self.…”

Section: Discusión Y Conclusionesunclassified

Reconocimiento de caras en la esquizotipia

García-Álvarez¹,

Lemos-Giráldez²,

Paíno³

et al. 2013

analesps

View full text Add to dashboard Cite

Resumen: Estudios previos sugieren la existencia de fallos en la percepción de uno mismo en la esquizofrenia y la esquizotipia y, en particular, una percepción inusual de la propia cara y de la de otros en la esquizotipia. El propósito de este estudio fue explorar las posibles diferencias en el reconocimiento de la propia cara y la de otros, entre las personas que puntúan alto y bajo en esquizotipia, además de confirmar si las dimensiones Cognitivoperceptiva y de Desorganización de la esquizotipia, pero no la dimensión Interpersonal, guardan relación significativa con esas anomalías, según lo observado en estudios previos. La muestra estuvo formada por 219 adolescentes y jóvenes no clínicos, (53% mujeres). Los instrumentos empleados fueron el Self-Face Recognition Questionnaire (SFRQ), el Cuestionario de Personalidad Esquizotípica versión breve (SPQ-B) y el ESQUIZO-Q. La media de edad de los participantes fue de 16.3 años (DT = 1.18). Las comparaciones entre quienes puntúan alto y bajo en esquizotipia ofrece apoyo a la hipótesis de que los rasgos positivos (Cognitivo-perceptivos y de Desorganización) correlacionan significativamente con las dificultades en el reconocimiento de caras. Las mujeres mostraron mayores dificultades que los varones en el reconocimiento de caras, probablemente debido la tendencia a puntuar más alto en la dimensión Cognitivo-perceptiva. Palabras clave: Reconocimiento de caras; esquizotipia; adolescencia; trastornos del yo.Title: Face recognition in schizotypy. Abstract: Studies suggest disturbances of self in schizophrenia and in schizotypy, and unusual perception of own and other faces in schizotypy. The purpose of this study was to explore possible differences between high and low scores on schizotypal questionnaires and self and others-face recognition, and confirm whether the cognitive-perceptual and disorganization dimensions of schizotypy, but not the interpersonal dimension, significantly correlated with such disturbances, as observed in previous studies. A sample of 219 nonclinical adolescent and young subjects (53% females) completed the Self-Face Recognition Questionnaire (SFRQ), the Schizotypal Personality Questionnaire-Brief (SPQ-B), and the Oviedo Schizotypy Assessment Questionnaire (ESQUIZO-Q). Mean age of the participants was 16.3 years (SD = 1.18). Comparisons between those participants scoring high and low in schizotypal traits offer further support that positive (Cognitive-perceptual and Disorganization) traits significantly correlate with face recognition difficulties; demonstrating girls more disturbances than boys in face recognition, probably due to higher scores in the Cognitive-perceptive dimension.

show abstract

A left-hand advantage for self-description: the impact of schizotypal personality traits

Cited by 49 publications

References 24 publications

Sense of Agency Primes Manual Motor Responses

Sense of Agency Primes Manual Motor Responses

Selective impairment in recognizing the familiarity of self faces in schizophrenia

Reconocimiento de caras en la esquizotipia

Contact Info

Product

Resources

About