'Big brother: the effects of surveillance on fundamental aspects of social vision' by Kiley Seymour, Jarrod McNicoll and Roger Koenig-Robert in (2024) 1 Neuroscience of Consciousness argues
Despite the dramatic rise of surveillance in our societies, only limited research has examined its effects on humans. While most research has focused on voluntary behaviour, no study has examined the effects of surveillance on more fundamental and automatic aspects of human perceptual awareness and cognition. Here, we show that being watched on CCTV markedly impacts a hardwired and involuntary function of human sensory perception—the ability to consciously detect faces. Using the method of continuous flash suppression (CFS), we show that when people are surveilled (N = 24), they are quicker than controls (N = 30) to detect faces. An independent control experiment (N = 42) ruled out an explanation based on demand characteristics and social desirability biases. These findings show that being watched impacts not only consciously controlled behaviours but also unconscious, involuntary visual processing. Our results have implications concerning the impacts of surveillance on basic human cognition as well as public mental health. ..
In recent years, we have seen an exponential increase in human surveillance. We now live in a world with closed-circuit television (CCTV) in public spaces, trackable mobile devices, and the monitoring of our activities through artificially intelligent technology and the ‘Internet of Things’ (the interconnected system of our devices and sensors collecting and sharing data through the internet). Data on what we do, what we say, and where we go can be monitored and made available to third parties (Zuboff 2015, Cecez-Kecmanovic 2019). With the advent of emerging neurotechnology, even our mental privacy is at risk (Farahany 2023). Despite this proliferation of surveillance technology, there is limited research on its effects on human psychology, including fundamental capacities like the basic perceptual processing of our sensory environment.
Literature available on the topic of human surveillance and being watched suggests that it elicits changes in overt behaviour. For instance, a large body of evidence on ‘audience effects’ suggests people act in a more prosocial manner when they believe they are being watched. When people think their behaviour is monitored, they are more giving (Hoffman et al. 1996, Haley and Fessler 2005, Pfeiffer and Nowak 2006, Rigdon et al. 2009, Powell et al. 2012, Nettle et al. 2013, Bateson et al. 2015), more likely to share (Baillon et al. 2013, Oda et al. 2015), and less likely to steal, cheat, litter, or direct their gaze to provocative images (Tourangeau and Yan 2007, Zhong et al. 2010, Risko and Kingstone 2011, Francey et al. 2012, Nettle et al. 2012, Nasiopoulos et al. 2015). It is argued that these behavioural changes act to uphold the reputation of the individual and protect from negative social consequences (Izuma 2012, Nettle et al. 2013, Conty et al. 2016).
In addition to the changes in social behaviour, a feeling of being watched commonly invokes discomfort in people (Panagopoulos and Van Der Linden 2017) and increases vigilance, self-consciousness, and the fight-or-flight response (e.g. an increase in heart rate and skin conductance) (Kleinke and Pohlen 1971, Nichols and Champness 1971, Gale et al. 1975, Putz 1975, Reddy 2003, Conty et al. 2010b, Helminen et al. 2011, Baltazar et al. 2014). It has also been shown that surveillance in the workplace induces negative effects on productivity (Gagné and Deci 2005), likely due to impacts on attention and working memory (Senju and Hasegawa 2005, Conty et al. 2010a, Risko and Kingstone 2011, Wang and Apperly 2017, Colombatto et al. 2019). Interestingly, it seems to be an implied social presence rather than a true presence of the observer that is important here, with simple photos of watching eyes or a mere belief that someone is watching eliciting the behavioural changes (Putz 1975, Haley and Fessler 2005, Bateson et al. 2006, Burnham and Hare 2007, Rigdon et al. 2009, van Rompay et al. 2009, Risko and Kingstone 2011, Lawson 2015, Nasiopoulos et al. 2015, Colombatto et al. 2019).
While the effects of surveillance on social behaviour are well-documented, it is unclear how being watched impacts more fundamental capacities not subject to explicit, overt, and conscious control of the individual. For instance, being able to rapidly detect when someone or something is looking at you is a profound and hardwired human faculty requiring specialized neural mechanisms that operate largely outside of conscious control (Brothers 1990, Perrett and Emery 1994, Baron-Cohen 1995, Emery 2000, Calder et al. 2007, Hietanen et al. 2008, Senju and Johnson 2009, Bayliss et al. 2011, Burra et al. 2013, Carlin and Calder 2013). In fact, this heightened sensitivity to another’s gaze is thought to underlie a feeling of being watched that can be experienced in the absence of any surveillance and commonly reported in the population (Freeman et al. 2005, Taylor et al. 2009, Bebbington et al. 2013, Harper and Timmons 2021). Given the adaptive significance, we hypothesize that these mechanisms are further engaged when one knows they are being watched. Indeed, evidence from clinical research suggests that patients with schizophrenia who experience persecutory delusions (i.e. erroneous beliefs about being watched) show increased perceptual sensitivity to the self-directed gaze of others (Rosse et al. 1994, Hooker and Park 2005, Tso et al. 2012, Langdon et al. 2017).
In the current study, we test whether being watched influences perceptual processing of the sensory environment, namely the processing of eye gaze. Specifically, we ask whether being monitored makes the visual system more sensitive to this essential visual and social cue. Using a technique known as breaking continuous flash suppression or b-CFS (Tsuchiya and Koch 2005), we temporarily suppressed photographs of faces from visual awareness. The time the face takes to break through the suppressive mask and become visible to the participant is typically treated as an index of its salience. In previous experiments using b-CFS, it has been shown that the visual system prioritizes the detection of faces with direct gaze over faces with averted gaze, suggesting visual cues used to discriminate eye gaze direction are preconsciously processed by the visual system (Stein et al. 2011, Yokoyama et al. 2013, Seymour et al. 2016). In the current study, we examined whether being watched influenced the speed at which these gaze signals reach conscious awareness by means of a detection task (i.e. stimulus on the left or right). We hypothesized that if being surveilled facilitates basic sensory processing of eye gaze, then participants who had evidence of being monitored during the task (i.e. experiencing the presence of CCTV) would detect self-directed gaze signals faster than participants who did not.
